State Route 120 (SR 120) is a

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...

in the central part of

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

, connecting the

San Joaquin Valley The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...

with the

Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primar ...

Yosemite National Park Yosemite National Park ( ) is an American national park in California, surrounded on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers an ...

, and the

Mono Lake Mono Lake ( ) is a saline soda lake in Mono County, California, formed at least 760,000 years ago as a terminal lake in an endorheic basin. The lack of an outlet causes high levels of salts to accumulate in the lake which make its water a ...

area. Its western terminus is at

Interstate 5 Interstate 5 (I-5) is the main north–south Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels through the states of Californi ...

in Lathrop, and its eastern terminus at U.S. Route 6 in Benton. While the route is signed as a contiguous route through Yosemite, the portion inside the park is federally maintained and is not included in the state route logs. The portion at Tioga Pass at Yosemite's eastern boundary is the highest paved through road in the California State Route system. This part is not maintained in the winter and is usually closed during the winter season.

Route description

California State Route 120 Markers at Yosemite National Park

Tuolumne Meadows - Pywiack Dome summit looking SW - 3

SR 120 begins as a freeway intersecting

to extend

Interstate 205 Interstate 205 may refer to either of two unconnected Interstate Highways in the United States, both of which are related to Interstate 5 * Interstate 205 (California), a connector in the San Francisco Bay Area * Interstate 205 (Oregon–Washing ...

through Manteca. In east Manteca the freeway ends at SR 99 and becomes a highway which continues to head east through Escalon, Oakdale and other various small towns. East of Oakdale there are no highly populated areas for 90 miles (144 km) as it heads into the foothills of the

and into

. Entering Yosemite, SR 120 is known as Big Oak Flat Road as it heads towards Crane Flat. After leaving Crane Flat, Big Oak Flat Road turns southeast towards

Yosemite Valley Yosemite Valley ( ; ''Yosemite'', Miwok for "killer") is a U-shaped valley, glacial valley in Yosemite National Park in the western Sierra Nevada (U.S.), Sierra Nevada mountains of Central California. The valley is about long and deep, surroun ...

, while SR 120 continues east as Tioga Pass Road (or often simply Tioga Road). The highway retains that name as it travels through

Tuolumne Meadows Tuolumne Meadows () is a gentle, dome-studded, sub-alpine meadow area along the Tuolumne River in the eastern section of Yosemite National Park in the United States. Its approximate location is . Its approximate elevation is . The term ''Tuolumne Me ...

, over Tioga Pass at an elevation of 9,945 feet, and through the Lee Vining Canyon on its journey to its intersection with

U.S. Route 395 U.S. Route 395 (US 395) is a U.S. Route in the western United States. The southern terminus of the route is in the Mojave Desert at Interstate 15 near Hesperia. The northern terminus is at the Canada–US border near Laurier, where the road ...

, at Lee Vining. After a jog to the south along US 395, it continues east as Mono Mills Road, skirting the south end of

and providing access to the Mono Lake South Tufa as well as the historical site of Mono Mills before cresting Sagehen Summit and ending with the intersection of U.S. Route 6 at Benton. Both the portions through Yosemite National Park and the stretch south of Mono Lake are subject to winter closure. Usually the highway is open through Tioga Pass by the Memorial Day weekend at the end of May, and typically closes for the winter sometime in November. Tioga Road/Big Oak Flat Road is officially both a

National Scenic Byway A National Scenic Byway is a road recognized by the United States Department of Transportation for one or more of six "intrinsic qualities": archeological, cultural, historic, natural, recreational, and scenic. The program was established by Co ...

and a

National Forest Scenic Byway The National Forest Scenic Byways are roads that have been designated by the U.S. Forest Service as scenic byways. Many are also National Scenic Byways (NSB). The program was initiated in 1987. __TOC__ List The following roadways were listed by t ...

. The segment through the Lee Vining Canyon between the eastern edge of Yosemite and US 395 is designated as the Lee Vining Canyon Scenic Byway, a separate National Forest Scenic Byway. SR 120 is part of the

California Freeway and Expressway System The California Freeway and Expressway System is a system of existing or planned freeways and expressways in the U.S. state of California. It encompasses both State highways and federal highways in California. It is defined by Article 2 (comme ...

, and both the western portion and the eastern portion west of US 395 are part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the

Federal Highway Administration The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program ...

. SR 120 is eligible to be included in the State Scenic Highway System, but it is not officially designated as a scenic highway by the

California Department of Transportation The California Department of Transportation (Caltrans) is an executive department of the U.S. state of California. The department is part of the cabinet-level California State Transportation Agency (CalSTA). Caltrans is headquartered in Sacram ...

. The Tioga Pass Road was designated as a California Historic Civil Engineering Landmark by the

American Society of Civil Engineers American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, p ...

in 2002.

History

The national parks portfolio (1921) (14582187938)

During the Gold Rush, SR 120 was originally known as Big Oak Flat Road, after the village of

Big Oak Flat Groveland-Big Oak Flat is an unincorporated community and former census-designated place (CDP) in Tuolumne County, California, United States. The population was 3,388 at the 2000 census. This CDP included the communities of Groveland, Big Oa ...

through which it passes in the Sierra foothills. It was a pack trail from Stockton which became popular with prospectors about 1849. By 1874 it was a wagon road which extended to

. In 1921, the

California State Assembly The California State Assembly is the lower house of the California State Legislature, the upper house being the California State Senate. The Assembly convenes, along with the State Senate, at the California State Capitol in Sacramento. The ...

authorized

San Joaquin County San Joaquin County (; Spanish: ''San Joaquín'', meaning " St. Joachim"), officially the County of San Joaquin, is a county in the U.S. state of California. As of the 2020 census, the population was 779,233. The county seat is Stockton. San J ...

to transfer the

county road A county highway (also county road or county route; usually abbreviated CH or CR) is a road in the United States and in the Canadian province of Ontario that is designated and/or maintained by the county highway department. Route numbering c ...

connecting Manteca with then- Route 5 (now

I-5 Interstate 5 (I-5) is the main north–south Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels through the states of Californi ...

) at Mossdale to the state. It was numbered Route 66, as was a 1933 extension from Manteca east to Route 13 in Oakdale. Also in 1933, Route 40 was extended east from Mono Lake to Route 76 (

US 6 U.S. Route 6 (US 6), also called the Grand Army of the Republic Highway, honoring the American Civil War veterans association, is a main route of the U.S. Highway system. While it currently runs east-northeast from Bishop, California, to ...

) at Benton.

State Highway Routes: Selected Information
1994 with 1995 revisions The route from Manteca to Benton was marked as Sign Route 120 in 1934, and was soon extended west to Mossdale, replacing what had been part of U.S. Route 99W.

Priest grades

West of

Priest A priest is a religious leader authorized to perform the sacred rituals of a religion, especially as a mediatory agent between humans and one or more deities. They also have the authority or power to administer religious rites; in partic ...

is a section of highway with over one hundred curves and hairpin turns, known as the "New Priest Grade." With a 4% grade, it opened in 1915 and was built by a group of local volunteers who desired an alternative to the very steep (17%) Old Priest Grade. Today, both grades are paved, but trailers and RVs are prohibited from Old Priest Grade. There is a 7,500-pound weight limit on the old grade.

Major intersections

References

*Map: "Stanislaus National Forest, California," U.S. Forest Service, 1979.

External links

A Brief History Of The Tioga RoadCaltrans: Route 120 Road Conditions
* ttp://www.aaroads.com/california/ca-120.html California @ AARoads.com - State Route 120br>California Highways: SR 120
{{Yosemite National Park

120 120 may refer to: *120 (number), the number * AD 120, a year in the 2nd century AD *120 BC, a year in the 2nd century BC *120 film, a film format for still photography * ''120'' (film), a 2008 film * 120 (MBTA bus) * 120 (New Jersey bus) * 120 (Ken ...

State Route 120 State Route 120 State Route 120 State Route 120 State Route 120 State Route 120

U.S. Route 99