California County Routes In Zone G
   HOME

TheInfoList



OR:

There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates
county routes in California County routes in the U.S. state of California are controlled and maintained by the respective counties in which they are located. However, they are generally patrolled by the state's California Highway Patrol. They are typically major thoroughfa ...
. The "G" zone includes county highways in
Monterey Monterey (; es, Monterrey; Ohlone: ) is a city located in Monterey County on the southern edge of Monterey Bay on the U.S. state of California's Central Coast. Founded on June 3, 1770, it functioned as the capital of Alta California under both ...
, San Benito,
San Luis Obispo San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly halfwa ...
, Santa Clara, and Santa Cruz counties.


G1

County Route G1 (CR G1) is a road in
San Benito County, California San Benito County (; ''San Benito'', Spanish language, Spanish for "Benedict of Nursia, St. Benedict"), officially the County of San Benito, is a county (United States), county located in the California Coast Ranges, Coast Range Mountains of the ...
, United States, providing access to
Fremont Peak State Park Fremont Peak State Park is a California State Park located in Monterey County and San Benito County, California. The park encompasses the summit of Fremont Peak in the Gabilan Range. The park features expansive views of Monterey Bay and Pacifi ...
from State Route 156 in San Juan Bautista. It is signed as San Juan Canyon Road for almost the entire length except for a small portion of The Alameda.


Route description

From the southern end of G1 on Fremont Peak as San Juan Canyon Road, G1 begins a steep, sharp-curved winding descent from around 3,000 feet for the first 2 miles, north to northeast. G1 then curves to the west for about 2 miles before turning north. At the intersection of Mission Vineyard Road, G1 becomes The Alameda, which then heads north for approximately 1/4 mile before reaching the northern terminus at State Route 156. Beyond the northern terminus, The Alameda continues into downtown San Juan Bautista for 0.2 miles until the intersection of First Street.


Major intersections


G2

County Route G2, more commonly known as Lawrence Expressway and Quito Road, is a busy long north–south link through
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
in
Northern California Northern California (colloquially known as NorCal) is a geographic and cultural region that generally comprises the northern portion of the U.S. state of California. Spanning the state's northernmost 48 counties, its main population centers incl ...
. The majority of G2 is part of the Santa Clara County expressway system.


Route description

G2 runs from the Quito Road overcrossing of SR 85 in Saratoga, north along Quito Road. G2 is not signed along this section and is not commonly recognized as existing along this 2 lane road by either locals or mapmakers. The Quito Road portion is also maintained by the City of Saratoga rather than
Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
. As the road leaves Saratoga and enters San Jose, it widens to a 6 lane county-maintained expressway with a concrete island divider; at this point it becomes Lawrence Expressway. The Lawrence Expressway section from just south of Saratoga Avenue is more readily recognized as G2. Local residents almost exclusively refer to G2 as Lawrence Expressway. The road continues north, with access usually restricted to major intersections which are controlled via
traffic light Traffic lights, traffic signals, or stoplights – known also as robots in South Africa are signalling devices positioned at intersection (road), road intersections, pedestrian crossings, and other locations in order to control flows of traf ...
s. Lawrence Expressway continues northeasterly and junctions with
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
and Stevens Creek Boulevard over a complex shared separated grade crossing. Lawrence Expressway proceeds under I-280 before immediately rising over Stevens Creek Boulevard. San Tomas Expressway and Campbell Avenue also share ramps for access to I-280 with the exception of the onramp to Southbound I-280 which is accessed directly from Lawrence Expressway, a frequent cause of confusion for drivers on Stevens Creek Boulevard wishing to access I-280 due to unclear signage. Lawrence Expressway continues north into Santa Clara and widens to 8 lanes with an
HOV A high-occupancy vehicle lane (also known as an HOV lane, carpool lane, diamond lane, 2+ lane, and transit lane or T2 or T3 lanes) is a restricted traffic lane reserved for the exclusive use of vehicles with a driver and one or more passengers, i ...
lane occupying the far right lane. Lawrence Expressway also has another separated grade interchange with El Camino Real ( SR 82). Lawrence Expressway then enters
Sunnyvale Sunnyvale () is a city located in the Santa Clara Valley in northwest Santa Clara County in the U.S. state of California. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the north ...
. At this point the expressway passes over
Caltrain Caltrain (reporting mark JPBX) is a California commuter rail line serving the San Francisco Peninsula and Santa Clara Valley (Silicon Valley). The southern terminus is in San Jose at Tamien station with weekday rush hour service running as far ...
's Lawrence Station. Lawrence Expressway also passes under Central Expressway (G6) on a separated grade interchange and over
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
on a separated grade interchange. The US 101 interchange was upgraded in the early 2000s to include traffic light control on G2. G2 reaches its northern terminus at the end of Lawrence Expressway at the SR 237 Freeway. The physical road continues north as Caribbean Drive.


History

The designation G2 existed to the 1950s. The route replaced what was originally called Lawrence Station Road (after the
Southern Pacific The Southern Pacific (or Espee from the railroad initials- SP) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the ...
Lawrence station), from Mountain View–Alviso Road in the north to Stevens Creek Blvd. on the south, roughly paralleling
Saratoga Creek Saratoga Creek is a north-northeast flowing creek in Santa Clara County, California. History Saratoga Creek was originally called Arroyo Quito and then Campbell Creek after immigrant William Campbell, who operated a sawmill in 1848 in "Campbell's ...
. Lawrence Station was itself named for Alfred Chester Lawrence. Crossing Stevens Creek, the route was originally called Doyle Road, a small two lane road up to the point the current Doyle Road exits to the east. The section between Doyle and Saratoga Avenue at Quito Road was originally orchards. G2 was first signed as a Santa Clara County Route in 1962 as construction was completing on sections of the upgrade to an expressway. County Route G2 was originally planned to link up with SR 85 when it was built. At the time of G2's inception SR 85 was in the early planning stages and an interchange had been envisioned at Quito Road. However opposition to the freeway was intense in Saratoga and the planned interchange between SR 85 and G2 along with an interchange further north at Prospect Road were abandoned in favor of the existing Saratoga Avenue interchange. G2 is unsigned from SR 85 to Saratoga Avenue along Quito Road. North of Saratoga Avenue, Lawrence Expressway is currently signed as G2. In the 1990s Lawrence Expressway was widened north of I-280 to 8 lanes to accommodate an
HOV A high-occupancy vehicle lane (also known as an HOV lane, carpool lane, diamond lane, 2+ lane, and transit lane or T2 or T3 lanes) is a restricted traffic lane reserved for the exclusive use of vehicles with a driver and one or more passengers, i ...
carpool lane. As of 2019, Santa Clara County is planning a major grade separation project at Homestead Road. This will be one of the largest expressway improvement projects in many years.


Major intersections


G3

County Route G3, more commonly known as Page Mill Road and Oregon Expressway is a short northeast–southwest
arterial An artery (plural arteries) () is a blood vessel in humans and most animals that takes blood away from the heart to one or more parts of the body (tissues, lungs, brain etc.). Most arteries carry oxygenated blood; the two exceptions are the pul ...
route that spans the lower peninsula region of the
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Go ...
from
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
to
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
. G3 runs through
Palo Alto Palo Alto (; Spanish for "tall stick") is a charter city in the northwestern corner of Santa Clara County, California, United States, in the San Francisco Bay Area, named after a coastal redwood tree known as El Palo Alto. The city was estab ...
and unincorporated
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is consider ...
lands. It is part of the Santa Clara County expressway system.


Route description

G3 begins in the west at its interchange with I-280, at the Los Altos Hills–Stanford border. It proceeds northeast as a four lane expressway over the rolling hills of Stanford University until it reaches
Foothill Expressway There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates county routes in California. The "G" zone includes county highways in Monterey County, California, Monterey, San Benito County, California, San ...
(G5), at which it has an
at-grade intersection An intersection or an at-grade junction is a junction where two or more roads converge, diverge, meet or cross at the same height, as opposed to an interchange, which uses bridges or tunnels to separate different roads. Major intersections a ...
. East of Foothill Expressway, G3 descends down into the more urban areas of the lower peninsula, going through the industrialized area of the Stanford Research Park located in Palo Alto. The road along this section has a reduced speed limit and several turnoffs along its length until it reaches El Camino Real ( SR 82). After SR 82, Oregon Expressway branches from Page Mill Road, which becomes a short two-lane street, and G3 follows Oregon Expressway under the
Caltrain Caltrain (reporting mark JPBX) is a California commuter rail line serving the San Francisco Peninsula and Santa Clara Valley (Silicon Valley). The southern terminus is in San Jose at Tamien station with weekday rush hour service running as far ...
tracks and onward for the remainder of its northeastward journey. Oregon Expressway resumes expressway status with limited access confined mainly to large intersections. G3 reaches its eastern terminus at its junction with
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
. Page Mill Road (no longer designated G3) continues southwest of I-280 for , a twisting two-lane road that climbs to
Skyline Boulevard A skyline is the outline or shape viewed near the horizon. It can be created by a city’s overall structure, or by human intervention in a rural setting, or in nature that is formed where the sky meets buildings or the land. City skylines ...
( SR 35) at the crest of the
Santa Cruz Mountains The Santa Cruz Mountains, part of the Pacific Coast Ranges, are a mountain range in central and Northern California, United States. They form a ridge down the San Francisco Peninsula, south of San Francisco. They separate the Pacific Ocean from ...
. It passes the entrance to Palo Alto's
Foothills Park Foothills Park is a park and nature preserve in the Santa Cruz Mountains of California, United States, within the city of Palo Alto. From 1969 until 2020, only residents or city employees of Palo Alto and their guests had lawful access to it, a ...
, and the Monte Bello and
Los Trancos Open Space Preserve Los Trancos Open Space Preserve is a 274-acre (1.11 km2) open space preserve, located in San Mateo and Santa Clara Counties, California, near Los Altos Hills, California. The preserve contains about 5 miles (8 km) of hiking trails, of ...
s. Under the name West Alpine Road, the road descends west of Skyline Boulevard to a turn-off that leads to
Portola Redwoods State Park Portola Redwoods State Park is a state park in California situated in San Mateo County. The parks' primary watercourses — Peters Creek, Pescadero Creek and their associated tributaries — converge at Portola Redwoods State Park. Tip Toe Fa ...
, where the original Page sawmill was located. Other than a commemorative sign, no artifacts remain at the mill site, which is accessible only by Slate Creek Trail from either Portola Redwoods state park or from
Skyline Boulevard A skyline is the outline or shape viewed near the horizon. It can be created by a city’s overall structure, or by human intervention in a rural setting, or in nature that is formed where the sky meets buildings or the land. City skylines ...
(SR 35).


History

This route was designated in 1962. G3 is currently signed its entire length. Page Mill Road was originally known as Mayfield–Pescadero Road, but only a small portion of Page Mill Road is part of G3. The widening of Oregon Avenue from a congested narrow residential street to a median-divided 4-lane Oregon Expressway was narrowly approved by Palo Alto voters in a June 5, 1962, election; about 90 homes on the south side of Oregon Avenue were moved or destroyed to make room for it.


Major intersections


G4

County Route G4, more commonly referred to as San Tomas Expressway and Montague Expressway is a busy long link across
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
. G4 is part of the Santa Clara County expressway system.


Route description

G4 begins in the south at its interchange with SR 17 and Camden Avenue as San Tomas Expressway in the city of
Campbell Campbell may refer to: People Surname * Campbell (surname), includes a list of people with surname Campbell Given name * Campbell Brown (footballer), an Australian rules footballer * Campbell Brown (journalist) (born 1968), American television ne ...
. The road is three lanes wide in each direction, with an
HOV A high-occupancy vehicle lane (also known as an HOV lane, carpool lane, diamond lane, 2+ lane, and transit lane or T2 or T3 lanes) is a restricted traffic lane reserved for the exclusive use of vehicles with a driver and one or more passengers, i ...
carpool lane occupying the right lane, from SR 17 north to Homestead Road, where it expands to four lanes in each direction with an HOV lane until San Tomas "ends" at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
. The majority of intersections along San Tomas are at grade, controlled by
traffic light Traffic lights, traffic signals, or stoplights – known also as robots in South Africa are signalling devices positioned at intersection (road), road intersections, pedestrian crossings, and other locations in order to control flows of traf ...
s. The only grade-separated intersections along San Tomas are at SR 17, US 101, Winchester (necessary due to a
Union Pacific The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Paci ...
branchline), and the junction with Central Expressway (G6). G4 intersects at grade with El Camino Real in Santa Clara. Further north in Santa Clara, G4 crosses US 101 and becomes Montague Expressway. Montague Expressway is signed as an east–west route, however it is not signed as G4 along its entire length. Montague continues east as an 8 lane road until it crosses Interstate 880 on the San Jose/
Milpitas Milpitas (Spanish for "little milpas") is a city in Santa Clara County, California, in Silicon Valley. As of the 2020 census, the city population was 80,273. The city's origins lie in Rancho Milpitas, granted to Californio ranchero José Marí ...
city line, where it loses a lane to become a 6 lane road. G4 reaches its eastern terminus at Interstate 680 but the physical road continues as Landess Ave further east until it ends at its intersection with Piedmont Road.


History

G4 was designated and signed in 1962 along the San Tomas portions. Montague was designated later around 1978. Whether this has anything to do with Montague and not being physically signed as G4 is uncertain. Emergency Call boxes along Montague however are labeled as being on G4 leaving no doubt that Montague is part of G4. Original plans called for G4 to include Hillsdale Avenue and Camden Avenue, between its present-day southern terminus and the southern terminus of Capitol Expressway (G21). These plans were never brought to fruition.


Major intersections


G5

County Route G5, more often referred to as Foothill Expressway, is a 4 lane, long, northwest–southeast route in
Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
. G5 connects
Palo Alto Palo Alto (; Spanish for "tall stick") is a charter city in the northwestern corner of Santa Clara County, California, United States, in the San Francisco Bay Area, named after a coastal redwood tree known as El Palo Alto. The city was estab ...
,
California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
to the
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
proper closely paralleling
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
through the lower
Santa Cruz Mountains The Santa Cruz Mountains, part of the Pacific Coast Ranges, are a mountain range in central and Northern California, United States. They form a ridge down the San Francisco Peninsula, south of San Francisco. They separate the Pacific Ocean from ...
foothills. This route is part of the Santa Clara County expressway system. The speed limit for much of Foothill Expressway is 45 mph.


Route description

G5 begins at its southeastern end at
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
in
Cupertino Cupertino ( ) is a city in Santa Clara County, California, United States, directly west of San Jose on the western edge of the Santa Clara Valley with portions extending into the foothills of the Santa Cruz Mountains. The population was 57,8 ...
,
California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
. It proceeds northwest directly east of I-280 making it a viable alternative route for short trips between Cupertino and
Palo Alto Palo Alto (; Spanish for "tall stick") is a charter city in the northwestern corner of Santa Clara County, California, United States, in the San Francisco Bay Area, named after a coastal redwood tree known as El Palo Alto. The city was estab ...
. The road is a four-lane expressway along its entire route. Access is generally limited to major intersections that are governed by
traffic lights Traffic lights, traffic signals, or stoplights – known also as robots in South Africa are signalling devices positioned at road intersections, pedestrian crossings, and other locations in order to control flows of traffic. Traffic light ...
except for an interchange at Fremont Avenue, which the interchange also provides access to Miramonte Avenue and Loyola Drive. G5 travels through several affluent neighborhoods in Los Altos before reaching its northern terminus at the intersection with Page Mill Road (G3). The physical road continues north as Junipero Serra Boulevard and passes the back entrances to
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is consider ...
.


History

G5 was designated in 1962 and is currently signed its entire length. The route was built upon the right-of-way for the Los Altos branch of the Peninsular Railway. The buildings along the route at Loyola Corners in Los Altos are historical railroad station buildings. In 1970 one of the first scientifically designed
noise barrier A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effecti ...
s in the nation was conceived for Foothill Expressway in a study overseen by the Santa Clara County Public Works Department using
Sunnyvale Sunnyvale () is a city located in the Santa Clara Valley in northwest Santa Clara County in the U.S. state of California. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the north ...
consultant
ESL Inc. ESL Incorporated, or Electromagnetic Systems Laboratory, was a subsidiary of TRW, a high technology firm in the United States that was engaged in software design, systems analysis and hardware development for the strategic reconnaissance market ...


Major intersections


G6

County Route G6, which comprises Central Expressway and part of Alma Street in Palo Alto is signed as a long, east–west route in the western portion of
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
,
California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
. While paralleling
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
, El Camino Real ( SR 82) and
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
, all of which are signed north–south, Central Expressway is signed east–west. This is due to the fact that all of these routes move in an east–west direction in this area, but these other routes continue longer than Central Expressway and are mostly north–south overall. This route is part of the Santa Clara County expressway system.


Route description

Route G6 actually begins in the west at Oregon Expressway as Alma Street in
Palo Alto Palo Alto (; Spanish for "tall stick") is a charter city in the northwestern corner of Santa Clara County, California, United States, in the San Francisco Bay Area, named after a coastal redwood tree known as El Palo Alto. The city was estab ...
. In Palo Alto, G6 remains a major surface street with four lanes of traffic and a center turning lane to service the many driveways and turnoffs available. At the Palo Alto – Mountain View border at San Antonio Road, G6's character changes, removing the driveways and frequent intersections and adding a center divider, and is renamed Central Expressway. Central continues east as a 4 lane road through the city of Mountain View. Through this section Central Expressway has more at-grade intersections than is typical for a designated expressway. This section's intersections are primarily at-grade with cross streets controlled by
traffic lights Traffic lights, traffic signals, or stoplights – known also as robots in South Africa are signalling devices positioned at road intersections, pedestrian crossings, and other locations in order to control flows of traffic. Traffic light ...
, although there are some overpasses, such as for San Antonio Road, Shoreline Blvd., Whisman Ave, SR 237 and SR 85. Up to this point, the road parallels the
Caltrain Caltrain (reporting mark JPBX) is a California commuter rail line serving the San Francisco Peninsula and Santa Clara Valley (Silicon Valley). The southern terminus is in San Jose at Tamien station with weekday rush hour service running as far ...
rail line, which limits the intersections and driveways on the south side of the road. After crossing under SR 85, Central Expressway takes on a very freeway-like appearance (which is not typical for most county roads) for several miles through
Sunnyvale Sunnyvale () is a city located in the Santa Clara Valley in northwest Santa Clara County in the U.S. state of California. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the north ...
. Through this section Central Expressway has a wide center divider and a sequence of several separated grade interchanges with main cross streets and no turnoffs or driveways. The final in this sequence is at
Lawrence Expressway There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates county routes in California. The "G" zone includes county highways in Monterey, San Benito, San Luis Obispo, Santa Clara, and Santa Cruz co ...
. East of Lawrence Expressway, Central Expressway resumes at grade intersections along with sporadic
HOV A high-occupancy vehicle lane (also known as an HOV lane, carpool lane, diamond lane, 2+ lane, and transit lane or T2 or T3 lanes) is a restricted traffic lane reserved for the exclusive use of vehicles with a driver and one or more passengers, i ...
lanes at the approaches to intersections. Central has one final separated grade interchange with San Tomas Expressway. Route G6 makes a turn onto De La Cruz for a few hundred feet until it reaches its terminus at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
, just outside the north end of
San Jose International Airport Norman Y. Mineta San Jose International Airport , commonly known simply as San Jose International Airport, is a city-owned public airport in San Jose, California, United States. It is named after San Jose native Norman Mineta, former United Sta ...
.


History

Central Expressway was first designated in 1962. Central Expressway was a vital route through the western Silicon Valley in the days before
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
had been widened and
I-280 Interstate 280 may refer to multiple highways, all of which are or were related to Interstate 80: * Interstate 280 (California), a north–south freeway running from San Jose to San Francisco * Interstate 280 (Iowa–Illinois), part of the beltway ...
had been built as an alternate route. Central Expressway still acts as an alternate route to US 101 through the west valley, however usage has declined as both freeways are now much larger and more direct routes. Construction was completed in 2007 near the eastern terminus widening Central Expressway to accommodate an
HOV A high-occupancy vehicle lane (also known as an HOV lane, carpool lane, diamond lane, 2+ lane, and transit lane or T2 or T3 lanes) is a restricted traffic lane reserved for the exclusive use of vehicles with a driver and one or more passengers, i ...
lane and a reconfiguration of the intersection with Lafayette Street. Central Expressway is currently signed as G6 sporadically along its entire length. In 1982, the prohibition against bicyclists using Central Expressway's shoulders was lifted. All pedestrian prohibitions were repealed by 2003.


Major intersections


G7

County Route G7 (CR G7) is a road in
Santa Clara County, California Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
, United States, southeast of Gilroy. The road is known as Bloomfield Avenue for its entire length, which runs from State Route 25 near
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
to State Route 152. The route serves as a bypass for travelers who are traveling from westbound State Route 152 to southbound U.S. Route 101. County Route G7 bypasses the State Route 152 at U.S. Route 101 interchange, where State Route 152 is signed as 10th Street. This bypass avoids considerable amounts of traffic congestion that is the result of large retail shopping centers on both sides of 10th Street. County Route G7 also serves Frazier Lake Airpark via Frazer Lake Road, as well as the Christopher Ranch garlic facility.


Major intersections


G8

County Route G8 is an important north–south
arterial road An arterial road or arterial thoroughfare is a high-capacity urban road that sits below freeways/motorways on the road hierarchy in terms of traffic flow and speed. The primary function of an arterial road is to deliver traffic from collector ro ...
from the south valley area of
Santa Clara County, California Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
, USA to near
Downtown San Jose Downtown San Jose is the central business district of San Jose, California. Downtown is one of the largest tech clusters in Silicon Valley, as well as the cultural and political center of San Jose. History The town was first settled in 1777. T ...
. G8 runs for over both rural roads, expressway and urban streets, but it is most commonly known by residents for its expressway portion, Almaden Expressway. G8 is also part of the Santa Clara County expressway system.


Route description

G8 begins in the south at its junction with State Route 152 in Gilroy. It proceeds north along Watsonville Road as a two-lane country road until it reaches the intersection of Watsonville Rd and Uvas Road. G8 turns left and proceeds north along Uvas Road which is a winding two-lane mountain road that passes by Uvas, Chesbro and Calero reservoirs and their surrounding parks. In
Calero Reservoir County Park Calero may refer to: People * Adolfo Calero (1931–2012), Nicaraguan businessman, and leader of the Nicaraguan Democratic Force * Agustín Ramos Calero (1919–1989), Puerto Rican soldier in World War II * Carlos Calero (born 1972), Colombian t ...
, Uvas Road is renamed McKean Road and proceeds into the
Almaden Valley , other_name= , native_name= es, Almadén , nickname= , settlement_type= Neighborhood of San Jose , total_type= , motto= , image_skyline = , flag_size= , image_sea= , seal_size= , image_shield= , shield_size= , image_blank_emblem= , ...
area of San Jose. At the north end of McKean Rd, G8 turns briefly right on Harry Road for a short distance and then left on to the south end of Almaden Expressway. As Almaden Expressway, G8 begins as a 2-lane undivided road for 1/2 mile before expanding to 4-lane divided expressway approaching the intersection of Almaden Road. Almaden Expressway eventually expands to a 6-8 lane expressway with the majority of access limited to major intersections controlled by traffic signals. The major exception to this is near Highway 85 and Blossom Hill Road (G10) where there are several major shopping centers. G8 intersects G10 at Blossom Hill Rd and SR 85 a quarter mile north. This interchange is one of the busiest in
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
due to several shopping centers and a
Costco Costco Wholesale Corporation (doing business as Costco Wholesale and also known simply as Costco) is an American multinational corporation which operates a chain of membership-only big-box retail stores (warehouse club). As of 2022, Costco i ...
warehouse store all sharing driveways with this interchange. G8 continues north resuming its expressway design. G8 shares a separated grade interchange with the terminus of Capitol Expressway Auto Mall and again with Murillo Avenue and Tully Road and Curtner Avenue. Other intersections along this part of the route are at grade. Almaden Expressway crosses State Route 87 with which it shares a northbound only interchange. G8 continues past the north end of Almaden Expressway on to Almaden Road as a 4-lane city street. At the intersection Almaden Road and Alma Avenue, G8 turns east along Alma Ave and proceeds for about a quarter mile to its eastern terminus at First Street (former SR 82).


History

G8 was originally designated in 1962 along Almaden Expressway which had begun construction in 1959. Almaden Expressway was not completed to its southern terminus until 1984. Before that time the section between McKean Rd and the southern end of the expressway (which was further north at the time) took a zig zag path from McKean Rd to Harry Rd to Almaden Road (S) to Barnes Lane, to the then southern end of Almaden Expressway. G8 is signed sporadically along its entire length.


Major intersections


G9

County Route G9 (CR G9) is a road in
Santa Clara County, California Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
, United States. The route runs along Leavesley Road from State Route 152's northern interchange with
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
in Gilroy and then curves southward onto Ferguson Road. The route's eastern terminus is at SR 152 (Pacheco Pass Highway) east of Gilroy. County Route G9 serves shoppers traveling to the Gilroy Premium Outlets, which features more than 145 stores and is the largest collection of outlet stores in Northern California. County Route G9 serves several agricultural facilities along its route. It also serves travelers as a bypass around the city of Gilroy, who wish to avoid the congestion at 10th Street and U.S. Route 101.


Major intersections


G10

County Route G10 (CR G10), known as Los Gatos-Saratoga Road, Los Gatos Boulevard, and more commonly known along the majority of its route as Blossom Hill Road for the majority of its length, is an important east–west
arterial An artery (plural arteries) () is a blood vessel in humans and most animals that takes blood away from the heart to one or more parts of the body (tissues, lungs, brain etc.). Most arteries carry oxygenated blood; the two exceptions are the pul ...
roadway through the
Almaden Valley , other_name= , native_name= es, Almadén , nickname= , settlement_type= Neighborhood of San Jose , total_type= , motto= , image_skyline = , flag_size= , image_sea= , seal_size= , image_shield= , shield_size= , image_blank_emblem= , ...
area of
Santa Clara County, California Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
, United States in the
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
. The route runs for and is a series of city streets for its entire length.


Route description

County Route G10 begins at its western end at the junction of SR 17 and Los Gatos-Saratoga Road (formerly Saratoga Avenue) in
Los Gatos Los Gatos (, ; ) is an List of municipalities in California, incorporated town in Santa Clara County, California, United States. The population is 33,529 according to the 2020 United States census, 2020 census. It is located in the San Franci ...
. It travels east on Los Gatos-Saratoga Road to the end of that road then turns northeast along Los Gatos Boulevard. CR G10 proceeds for about to Blossom Hill Road where it turns east. Along this stretch, CR G10 is a narrow road that proceeds over Blossom Hill, the hill that the road takes its name from. At the base of Blossom Hill, CR G10 enters San Jose and the
Almaden Valley , other_name= , native_name= es, Almadén , nickname= , settlement_type= Neighborhood of San Jose , total_type= , motto= , image_skyline = , flag_size= , image_sea= , seal_size= , image_shield= , shield_size= , image_blank_emblem= , ...
neighborhood. CR G10 proceeds as a busy 4-6 lane artery through this area, intersecting
Almaden Expressway There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates county routes in California. The "G" zone includes county highways in Monterey, San Benito, San Luis Obispo, Santa Clara, and Santa Cruz cou ...
and further east, through the
Blossom Valley Blossom Valley is a neighborhood of San Jose, California, located in South San Jose. Geography Blossom Valley is located in South San Jose South San Jose is the southern region of San Jose, California. The name "South Side" refers to an area ...
neighborhood of San Jose, to SR 85. Prior to the completion of the segments of SR 85 between 1991 and 1994, which CR G10 roughly parallels, Blossom Hill Road was the major accessway to this area of San Jose from the west. CR G10 reaches its eastern terminus at former prior-to-2013 SR 82, a few hundred feet (~100 meters) shy of
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
. Blossom Hill Road continues to US 101 and then over the freeway becoming Silver Creek Valley Road, before continuing as Nieman Boulevard and terminating at the junction with Capitol Expressway.


History

G10 was designated in 1964 as a county road. As of 2005, however, the road is no longer maintained by the county and is city street along its entire length. G10 is also only sporadically signed along its route and has been largely abandoned by the county after the completion of SR 85.


Major intersections


G11

County Route G11 (CR G11) is a county road in unincorporated
Monterey County, California Monterey County ( ), officially the County of Monterey, is a county located on the Pacific coast in the U.S. state of California. As of the 2020 census, its population was 439,035. The county's largest city and county seat is Salinas. Monte ...
, United States. The route runs from Porter Drive ( County Route G12) in Pajaro along San Juan Road through the Pajaro Valley and terminates at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
south of Aromas.


Route description

County Route G11 begins as San Juan Road at the intersection of Porter Drive (County Route G12) in Pajaro. It leaves Pajaro and continues east for a 3/4 mile before gradually turning southeast towards Aromas. The road enters a brief, but steep hill for a 3/4 mile with a passing lane, then returns as a two-lane road turning south and then southeast. Nearing the eastern terminus at US 101, CR G11 curves to the east and then sharply turns southeast. CR G11 crosses into
San Benito County San Benito County (; ''San Benito'', Spanish for "St. Benedict"), officially the County of San Benito, is a county located in the Coast Range Mountains of the U.S. state of California. As of the 2020 census, the population was 64,209. The coun ...
approximately one hundred feet (60 meters) before reaching its terminus at US 101. It provides an alternative route from Gilroy and Hollister towards Santa Cruz, bypassing the twistier, hillier routes 152 and 129, which, like Highway 17, can be daunting to novice drivers.


Major intersections


G12

County Route G12 is a road in Santa Cruz and
Monterey Monterey (; es, Monterrey; Ohlone: ) is a city located in Monterey County on the southern edge of Monterey Bay on the U.S. state of California's Central Coast. Founded on June 3, 1770, it functioned as the capital of Alta California under both ...
Counties. The route, running almost , begins at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
near Prunedale and follows ''San Miguel Canyon Road''
north-northwest The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...
ward to ''Hall Road'', onto which the route turns westward for passing through the community of Las Lomas. This portion arrives at ''Elkhorn Road'', where G12 turns northward for before joining ''Salinas Road'' first to enter Pajaro, where the route becomes ''Porter Road'', and then crosses into Santa Cruz County to enter
Watsonville Watsonville is a city in Santa Cruz County, California, located in the Monterey Bay Area of the Central Coast of California. The population was 52,590 according to the 2020 census. Predominantly Latino and Democratic, Watsonville is a self- ...
, where the route joins ''Main Street'' and terminates at State Route 129.


G13

County Route G13 is a county road in
Monterey Monterey (; es, Monterrey; Ohlone: ) is a city located in Monterey County on the southern edge of Monterey Bay on the U.S. state of California's Central Coast. Founded on June 3, 1770, it functioned as the capital of Alta California under both ...
and San Benito Counties. The route runs almost between King City in Monterey County and Route 25 in San Benito County. G13 begins in King City at the interchange with
U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
in King City as a city street. It turns east through downtown King City for one mile before turning northwest on First Street, which then becomes Lyons Street and turning northeast to become Bitterwater Road, passing
Mesa Del Rey Airport Mesa Del Rey Airport is a public airport a mile northeast of King City, California, King City, in Monterey County, California, United States. The National Plan of Integrated Airport Systems for 2011–2015 FAA airport categories, categorized it ...
and leaving the city limits. G13 then enters a hilly area before crossing into San Benito County for an additional six miles and terminating at the junction of State Route 25 at
Bitterwater Leeu-Gamka is a small town in the Western Cape province of South Africa, located north-east of Cape Town in the Karoo. History The town of Leeu-Gamka owes its existence to the route chosen by Prime Minister John Molteno for the Cape Government Ra ...
.


G14

County Route G14, running approximately , connects the Mission San Antonio area northwest of
Jolon Jolon (; Spanish: ''Jolón''; Salinan: ''Xolon'') is small unincorporated village in southern Monterey County, California. Jolon is located in the San Antonio River Valley, west of Salinas Valley. The origins of Jolon date to 1771, when the Spa ...
,
California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
, in the southern part of the county to Lake Nacimiento and then continues into northern
San Luis Obispo County San Luis Obispo County (), officially the County of San Luis Obispo, is a county on the Central Coast of California. As of the 2020 census, the population was 282,424. The county seat is San Luis Obispo. Junípero Serra founded the Mission ...
connecting to West 24th Street in
Paso Robles Paso Robles ( ), officially El Paso de Robles (Spanish for "The Pass of Oaks"), is a city in San Luis Obispo County, California, United States. Located on the Salinas River approximately north of San Luis Obispo, the city is known for its hot ...
where it meets
U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
and SR 46 near the California Mid-State Fair fairgrounds.


Route description

G14 begins at the intersection of US 101 and State Route 46 in Paso Robles. It then heads west for less than one mile (~1.5 km) before leaving the city limits as Nacimiento Lake Drive and turning mainly northwest for 15 miles. G14 then crosses the Nacimiento Dam for 1/4 mile before reaching a steep hill with a brief winding curve. G14 then turns west onto Interlake Road while Nacimiento Lake Drive continues as G19. As Interlake Road, G14 heads west with a brief curve to the north for a few miles and passing Lake San Antonio before turning mainly northwest and eventually north towards the town of Lockwood. Just a few hundred feet (~100 meters) south of Lockwood, G14 reaches the intersection of the western terminus of G18 and heads west along Jolon Road. As G14 reaches the small town of Jolon, a side road provides an entrance to Fort Hunter Liggett military facility while G14 curves to the north. G14 continues north through the southern end of the Santa Lucia range for several miles to reach the southern Salinas Valley. G14 terminates at US 101 west of King City. County Route G14 is a California State Scenic Highway.


G15

Monterey County Route G15 is a road running almost along the eastern edge of the
Salinas Valley The Salinas Valley is one of the major valleys and most productive Agriculture, agricultural regions in California. It is located west of the San Joaquin Valley and south of San Francisco Bay and the Santa Clara Valley. The Salinas River (Califo ...
. The road parallels
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
(and therefore El Camino Real) between King City and Soledad, with 101 to the west of the Salinas River and G15 to the east and following the western foot of the
Gabilan Range The Gabilan Range or Gabilán Range (Spanish for "sparrow hawk") are a mountain range in the inner California Coast Ranges System, located in Monterey County and San Benito County of central California. Pinnacles National Park is located in the so ...
. The route begins at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
southeast of King City and follows ''First Street'' through the city, where it intersects County Route G13 and exits the city as ''Metz Road''. G15 follows this road
northwest The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sep ...
ward, bypassing Greenfield for the unincorporated community of
Metz Metz ( , , lat, Divodurum Mediomatricorum, then ) is a city in northeast France located at the confluence of the Moselle and the Seille rivers. Metz is the prefecture of the Moselle department and the seat of the parliament of the Grand E ...
and terminating at State Route 146 near Soledad.


G16

Monterey County Route G16 runs between the
Santa Lucia Range The Santa Lucia Mountains (sæntə luˈsiːə) or Santa Lucia Range is a rugged mountain range in coastal central California, running from Carmel southeast for to the Cuyama River in San Luis Obispo County. The range is never more than from t ...
and the Sierra de Salinas in
Monterey County, California Monterey County ( ), officially the County of Monterey, is a county located on the Pacific coast in the U.S. state of California. As of the 2020 census, its population was 439,035. The county's largest city and county seat is Salinas. Monte ...
. The route, beginning from
California State Route 1 State Route 1 (SR 1) is a major north–south state highway that runs along most of the Pacific coastline of the U.S. state of California. At , it is the longest state route in California, and the second-longest in the US after Monta ...
follows ''Carmel Valley Road'' along the Carmel River into the Carmel Valley and southeastward into the community of the same name, near which the road intersects with Monterey County Route G20. After the route turns
east East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fa ...
ward onto '' Arroyo Seco Road'' near Millers Ranch. At the junction with
G17 G17 may refer to: * G17 Plus, a Serbian political party * , an ''Auk''-class minesweeper of the Mexican Navy * Bandy World Championship G-17, a sport competition * County Route G17 (California) * Glock 17 Glock is a brand of polymer-Receiver ...
, G16 joins ''Elm Avenue'' and enters the
Salinas Valley The Salinas Valley is one of the major valleys and most productive Agriculture, agricultural regions in California. It is located west of the San Joaquin Valley and south of San Francisco Bay and the Santa Clara Valley. The Salinas River (Califo ...
, later passing through Greenfield, crossing the Salinas River, and terminating at Monterey County Route G15 near the valley's eastern edge.


G17

County Route G17 was constructed in 1955, and is part of the De Anza National Historic trail. It extends from Reservation Road to Elm Avenue.


Route description

G17 begins as a three-way intersection with G16 near Millers Ranch as ''Arroyo Seco Road''. It then briefly heads northeast before turning north for several miles closely paralleling the eastern end of the Arroyo Seco until at the intersection at Fort Romie Road south of Fort Romie. G17 then proceeds northwest on ''Fort Romie Road'' as Arroyo Seco Road continues east to its terminus at
US 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
. Just after passing the
Mission Soledad Mission (from Latin ''missio'' "the act of sending out") may refer to: Organised activities Religion *Christian mission, an organized effort to spread Christianity * Mission (LDS Church), an administrative area of The Church of Jesus Christ of ...
historic site, G17 turns southwest for 1000 feet before reverting northwest. G17 continues for another 2 miles until the intersection with Foothill Road, becoming ''River Road''. As River Road, G17 continues northwest for several more miles along the Salinas River until the intersection with Gonzales River Road near
Gonzales Gonzales may refer to: Places * Gonzales, California, U.S. * Gonzales, Louisiana, U.S. * Gonzales, Texas, U.S. * Gonzales County, Texas Other uses * Battle of Gonzales, 1835 * Gonzales (horse) (1977 – after 1996), an American-bred Thoroughbred ...
, which G17 turns southwest for 1/4 mile before reverting northwest. As the road nears Chualar, G17 has another intersection with Chualar River Road and heads northwest, closely following the Salinas River. Shortly before the interchange with
State Route 68 The following highways are numbered 68: Australia * Channel Highway (Tasmania) * NSW (Multiple routes) Canada * Alberta Highway 68 * Manitoba Highway 68 * Ontario Highway 68 Chile *Chile Route 68 India * National Highway 68 (India) Korea, ...
, G17 becomes a 4-lane undivided road for about 1/2 mile before reverting to a 2-lane road and becoming Reservation Road. As Reservation Road, G17 continues northwest along the Salinas River with occasional sharp curves until reaching a brief steep hill south of Marina and becoming a 4-lane divided road. G17 remains a 4-lane divided road for most of the length through Marina except between Del Monte Blvd and Beach Road. At Del Monte Blvd, G17 truncates back to a 2-lane city street, progressively turning north, with traffic circles until the intersection of Beach Road. G17 which then turns northwest for 600 feet, resuming a 4-lane road until the northern terminus at State Route 1.


G18

This route is signed as Jolon Road and runs between
U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
on both ends. Although Jolon Road runs on both ends of 101, the western terminus of G18 is near Lockwood with the intersection of G14 and runs for approximately 16.4 miles. G18 begins at the intersection of G14 (Interlake Road) and proceeds east for several miles as a continuation of Jolon Road. There is a junction with G19 (Nacimiento Lake Road) just a few hundred feet shy of its eastern terminus with highway 101.


G19

G19 runs from G18 (Jolon Rd) to G14 (Interlake Rd), and is signed as Nacimiento Lake Road for the whole route. G19's southern terminus is at Interlake Road, which is a continuation of G14 portion of Nacimento Lake Road. G19 heads northeast for approximately 1.25 miles until the intersection with Vista Road. Vista Road provides access to Lake San Antonio, while G19 continues east, progressively turning north and crossing the San Antonio River before a sharp curve to the east. G19 then follows northeast along the San Antonio River for approximately one mile (1.6 km) before continuing north to the end at G18, a few hundred feet from
U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
near Bradley.


G20

County Route G20, also known as ''Laureles Grade'', is a steep, winding road running to connect Carmel Valley's G16 with
State Route 68 The following highways are numbered 68: Australia * Channel Highway (Tasmania) * NSW (Multiple routes) Canada * Alberta Highway 68 * Manitoba Highway 68 * Ontario Highway 68 Chile *Chile Route 68 India * National Highway 68 (India) Korea, ...
halfway between
Monterey Monterey (; es, Monterrey; Ohlone: ) is a city located in Monterey County on the southern edge of Monterey Bay on the U.S. state of California's Central Coast. Founded on June 3, 1770, it functioned as the capital of Alta California under both ...
and Salinas. It is on the California Scenic Highway System.


G21

Santa Clara County Route G21, more commonly known as Capitol Expressway, is a long east–west expressway completely in
San Jose, California San Jose, officially San José (; ; ), is a major city in the U.S. state of California that is the cultural, financial, and political center of Silicon Valley and largest city in Northern California by both population and area. With a 2020 popul ...
. Capitol Expressway is part of the Santa Clara County expressway system.


Route description

G21/Capitol Expressway begins at an interchange with State Route 87, as a continuation of Capitol Expressway Auto Mall. It continues east and northeast to a junction with
Highway 101 Highway 101 was an American country music band founded in 1986 in Los Angeles, California. The initial lineup consisted of Paulette Carlson (lead vocals), Jack Daniels (guitar), Curtis Stone (bass guitar, vocals), and Scott "Cactus" Moser (drums) ...
and then north into
East San Jose East San Jose (abbreviated as ESJ), commonly called The East Side and less commonly as the East Valley, is the eastern region of the city of San Jose, California. The East Side is made up of numerous neighborhoods grouped into two larger distric ...
. In East San Jose, Capitol Expressway turns west to intersect with I-680 and officially ends at Jackson Avenue, changing its name to East San Antonio Street. Where Capitol Expressway turns west toward I-680 in Alum Rock, Capitol Avenue continues north, ending in Milpitas at an intersection with Montague Expressway.


History

Capitol Expressway was designated in 1978 from Almaden Expressway to US 101, including what is now Capitol Expressway Auto Mall. Construction on the eastern portion from US 101 to I-680 was not completed until 1997. In the late 1990s the portion of the expressway from Almaden Expressway to SR 87 was transferred from
Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...
to the city of San Jose. San Jose then converted it into an
auto row An auto row or auto mall is a business cluster with multiple car dealerships in a single neighborhood or road. Auto rows are distinct from car supermarkets which are a single, large dealership. Economics Auto rows, like mall food courts, are an e ...
and renamed it Capitol Expressway Auto Mall. Capitol Expressway is signed as G21 along its length.


See also

*


References

{{CCR-zones G*