The Washington State Department of Transportation (WSDOT or WashDOT, both ) is a governmental agency that constructs, maintains, and regulates the use of transportation infrastructure in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...
of
Washington. Established in 1905, it is led by a secretary and overseen by the
governor
A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political ...
. WSDOT is responsible for more than 20,000 lane-miles of roadway, nearly 3,000 vehicular bridges and 524 other structures. This infrastructure includes rail lines,
state highways,
state ferries (considered part of the highway system) and
state airports.
History
Department of Highways
WSDOT was founded as the Washington State Highway Board and the Washington State Highways Department on March 13, 1905, when then-governor
Albert Mead signed a bill that allocated $110,000 to fund new roads that linked the state. The State Highway Board was managed by State Treasurer, State Auditor, and Highway Commissioner Joseph M. Snow and the Board first met on April 17, 1905, to plan the 12 original state roads. The first state highway districts, each managed by a District Engineer, were established in 1918. During this period, the construction of highways began.
In 1921, the State Highway Board was replaced by the Washington Highway Committee and the Washington State Highways Department became a division of the Washington State Department of Public Works. The first gas tax (1
¢ per gallon) was levied and Homer Hadley started planning a
pontoon bridge
A pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow- draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load that they can carry. ...
across
Lake Washington
Lake Washington is a large freshwater lake adjacent to the city of Seattle.
It is the largest lake in King County and the second largest natural lake in the state of Washington, after Lake Chelan. It borders the cities of Seattle on the west ...
, which would later become the
Lacey V. Murrow Memorial Bridge, which opened on July 2, 1940. In 1923, the State Highways Department separated from the Public Works Department and organized the first official system of highways, Washington's state road system. In 1926, the U.S. government approved the U.S. route system, which connected the country by road.
11 U.S. Routes entered Washington at the time. Later in 1929, the Highway Committee was merged with the State Highways Department. The
Lake Washington Floating Bridge and the original
Tacoma Narrows Bridge opened in 1940. The Tacoma Narrows Bridge collapsed because of winds on November 7 that year, earning it the name ''Galloping Gertie''.
The Washington State Highway Commission was formed in 1951.
On June 29, 1956,
President
President most commonly refers to:
*President (corporate title)
* President (education), a leader of a college or university
*President (government title)
President may also refer to:
Automobiles
* Nissan President, a 1966–2010 Japanese f ...
Dwight Eisenhower signed the
Federal Aid Highway Act of 1956
The Federal-Aid Highway Act of 1956, also known as the National Interstate and Defense Highways Act, was enacted on June 29, 1956, when President Dwight D. Eisenhower signed the bill into law. With an original authorization of $25 billion fo ...
, which started the
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. T ...
.
Originally, two Interstates entered Washington; most work was not completed until the 1970s. In 1964, the
state highways were renumbered to the
current system.
Metro Transit was created in 1972 and work on highways rapidly continued.
The North Cascades Highway (SR 20) was completed in 1972, and the first
HOV lanes
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 ...
in Washington were installed on
SR 520 that same year.
Department of Transportation
A combined state department of transportation was proposed in the mid-1960s and gained the support of Governor
Dan Evans. Charles Prahl, who resigned as head of the Department of Highways, criticized the Evans administration's proposal to create a transportation "superagency" and the prioritization of
rapid transit
Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be c ...
in plans for the urban transportation system of Seattle. The Washington State Department of Transportation was authorized by the state legislature and assumed the responsibilities of several agencies on September 21, 1977. William A. Bulley, the existing Director of Highways, was appointed as the state's first Secretary of Transportation to lead the new agency, which had absorbed state departments that had overseen highways, toll bridges, aeronautics, canals, and community development. The State Highway Commission was renamed to the Washington State Transportation Commission, with its first meeting taking place on September 21, 1977.
On February 13, 1979, the western pontoons of the
Hood Canal Bridge
The Hood Canal Bridge (officially William A. Bugge Bridge) is a floating bridge in the northwest United States, located in western Washington. It carries State Route 104 across Hood Canal of Puget Sound and connects the Olympic and Kitsap P ...
were swept away by a wind storm. In 1980,
Mount St. Helens erupted and caused damage to many state highways, mainly
SR 504. The
Hood Canal Replacement Bridge opened on October 3, 1982, and the
Lacey V. Murrow Memorial Bridge collapsed on November 25, 1990.
In 1991, a smaller renumbering of state highways occurred. The renumbering produced some new highways and either realigned or removed highways from the system. In 1996,
Sound Transit
Sound Transit (ST), officially the Central Puget Sound Regional Transit Authority, is a public transit agency serving the Seattle metropolitan area in the U.S. state of Washington. It operates the Link light rail system in Seattle and Tacom ...
was formed and in the same year, the Washington State Transportation Commission adopted its first 20-year transportation plan. Throughout the 1990s, WSDOT focused increasingly on rail systems and partnered with
Amtrak
The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada ...
to create a train route that went from Canada to Oregon, which later became the
Amtrak Cascades. The
2001 Nisqually earthquake
The 2001 Nisqually earthquake occurred at on February 28, 2001 and lasted nearly a minute. The intraslab earthquake had a moment magnitude of 6.8 and a maximum Mercalli intensity of VIII (''Severe''). The epicenter was in the southern Puge ...
damaged most state highways around the
Seattle metropolitan area
The Seattle metropolitan area is an urban conglomeration in the U.S. state of Washington that comprises Seattle, its surrounding satellites and suburbs. It contains the three most populous counties in the state—King, Snohomish, and Pierc ...
and most of the budget was turned over to the
Puget Sound
Puget Sound ( ) is a sound of the Pacific Northwest, an inlet of the Pacific Ocean, and part of the Salish Sea. It is located along the northwestern coast of the U.S. state of Washington. It is a complex estuarine system of interconnected m ...
region to help rebuild and repair roads and bridges.
Administration
WSDOT divides the state into six regions: the
Olympic,
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 ...
, Southwest, North Central, South Central, and
Eastern. The Northwest Region is subdivided into three more regions, which are
King County,
Snohomish County
Snohomish County () is a county located in the U.S. state of Washington. With a population of 827,957 as of the 2020 census, it is the third-most populous county in Washington, after nearby King and Pierce counties, and the 75th-most populo ...
, and Baker (
Whatcom,
Skagit,
Island
An island or isle is a piece of subcontinental land completely surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be ...
, and
San Juan San Juan, Spanish for Saint John, may refer to:
Places Argentina
* San Juan Province, Argentina
* San Juan, Argentina, the capital of that province
* San Juan, Salta, a village in Iruya, Salta Province
* San Juan (Buenos Aires Underground), ...
counties).
WSDOT is overseen by the
Governor of Washington
The governor of Washington is the head of government of Washington and commander-in-chief of the state's military forces.WA Const. art. III, § 2. The officeholder has a duty to enforce state laws,WA Const. art. III, § 5. the power to either ...
. The governor appoints a Secretary of Transportation who is confirmed by the
state legislature
A state legislature is a legislative branch or body of a political subdivision in a federal system.
Two federations literally use the term "state legislature":
* The legislative branches of each of the fifty state governments of the United Sta ...
. The last Secretary of Transportation was Lynn Peterson, who served until February 5, 2016, when her appointment under Governor
Jay Inslee
Jay Robert Inslee (; born February 9, 1951) is an American politician, lawyer, and economist who has served as the 23rd List of governors of Washington, governor of Washington since 2013. A member of the Democratic Party (United States), Democ ...
was rejected by the Washington State Senate during the confirmation process. Deputy Secretary of Transportation Roger Millar was appointed as Acting Secretary of Transportation by Governor Inslee on February 10, 2016.
Ferries
WSDOT manages the official ferry service in Washington. WSDOT's ferry service, called Washington State Ferries, is the largest in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
and third largest in the world. Ferries had been in the
Puget Sound
Puget Sound ( ) is a sound of the Pacific Northwest, an inlet of the Pacific Ocean, and part of the Salish Sea. It is located along the northwestern coast of the U.S. state of Washington. It is a complex estuarine system of interconnected m ...
since the 1950s.
[History of Washington State Ferry system](_blank)
WSDOT, Retrieved March 15, 2008 There are 10 routes and 22 ferries currently operating.
Buses
WSDOT began operating the
Travel Washington intercity Bus program in 2007. There are currently four lines:
*Grape Line, from
Pasco to
Walla Walla, operated by Airporter Shuttle/Bellair Charters
*Dungeness Line, from
Port Angeles to
Seattle
Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...
, operated by Olympic Bus Lines.
*Apple Line, from
Omak
Omak ( Merriam (1997), p. 869) is a city located in the foothills of the Okanogan Highlands in north-central Washington, United States. With an estimated 4,845 residents as of 2010, distributed over a land area of , Omak is the largest municipa ...
to
Ellensburg
Ellensburg is a city in and the county seat of Kittitas County, Washington, United States. It is located just east of the Cascade Range near the junction of Interstate 90 and Interstate 82. The population was 18,666 at the 2020 census. and ...
via
Wenatchee, operated by Northwestern
Trailways
*Gold Line, from
Kettle Falls to
Spokane
Spokane ( ) is the largest city and county seat of Spokane County, Washington, United States. It is in eastern Washington, along the Spokane River, adjacent to the Selkirk Mountains, and west of the Rocky Mountain foothills, south of the Canada ...
, operated by Airporter Shuttle/Bellair Charters
Current projects

As of 2008, there were about 250 projects that were being planned or constructed by WSDOT. Some of the most notable projects that were recently finished include the
Tacoma Narrows Bridge project, which built a second bridge adjacent to the original bridge, the
SR 167 HOT lanes
A high-occupancy toll lane (or HOT lane) is a type of traffic lane or roadway that is available to high-occupancy vehicles and other exempt vehicles without charge; other vehicles are required to pay a variable fee that is adjusted in respons ...
project, which added HOT lanes over SR 167's existing
HOV lanes
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 ...
from the
SR 18 area to 180th Street, and the
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 ...
HOV extensions project, which extended the HOV lanes in
Everett from the I-5/
SR 99/
SR 526/
SR 527 interchange to the I-5/
US 2/
SR 529 Spur interchange.
Some of the main projects in the future include the
Alaskan Way Viaduct replacement tunnel, the replacement of the
SR 520 Evergreen Point floating bridge, the
ferry terminals, the
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 ...
Crash barrier
Traffic barriers (sometimes called Armco barriers, AK Steel (formerly Armco) genericized trademark also known in North America as guardrails or guard rails and in Britain as crash barriers) keep vehicles within their roadway and prevent them from ...
project and
SR 704.
See also
*
United States Department of Transportation
The United States Department of Transportation (USDOT or DOT) is one of the executive departments of the U.S. federal government. It is headed by the secretary of transportation, who reports directly to the President of the United States an ...
*
State highways in Washington
References
Further reading
*
External links
*
WSDOT Key Facts
{{authority control
Transportation
Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land ( rail and road), water, cable, pipel ...
Department of Transportation
State departments of transportation of the United States
Government agencies established in 1964
1964 establishments in Washington (state)