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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 so ...
of
Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...
. Established in 1905, it is led by a secretary and overseen by the
governor A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...
. 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 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 Route number, numbered or maintained by a sub-national state or province. A road numbered ...
, 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, is a bridge that uses float (nautical), floats or shallow-draft (hull), draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the support ...
across
Lake Washington Lake Washington () is a large freshwater lake adjacent to the city of Seattle, Washington, United States. It is the largest lake in King County, Washington, King County and the second largest natural lake in the state of Washington (state), Was ...
, which would later become the
Lacey V. Murrow Memorial Bridge The Lacey V. Murrow Memorial Bridge is a floating bridge in the Seattle metropolitan area of the U.S. state of Washington. It is one of the Interstate 90 floating bridges that carries the eastbound lanes of Interstate 90 across Lake Washi ...
, 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 The Tacoma Narrows Bridge is a pair of twin bridges, twin suspension bridges that span the Tacoma Narrows strait of Puget Sound in Pierce County, Washington, Pierce County, Washington (state), Washington. The bridges connect the city of Tacom ...
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: Arts and entertainment Film and television *'' Præsident ...
Dwight Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was the 34th president of the United States, serving from 1953 to 1961. During World War II, he was Supreme Commander of the Allied Expeditionar ...
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 (e ...
, which started the
Interstate Highway System The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Hi ...
. 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 at least one passenger, ...
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) or heavy rail, commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separation, grade separated rapid transit line below ground su ...
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 in Puget Sound and connects the Olympic and Kitsap ...
were swept away by a wind storm. In 1980,
Mount St. Helens Mount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States ...
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 The Lacey V. Murrow Memorial Bridge is a floating bridge in the Seattle metropolitan area of the U.S. state of Washington. It is one of the Interstate 90 floating bridges that carries the eastbound lanes of Interstate 90 across Lake Washi ...
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 (state), Washington. It manages the Link light rail system in Se ...
was formed and in the same year, the Washington State Transportation Commission adopted its first 20-year transportation plan. Throughout the 1990s, WSDOT and ODOT partnered with
Amtrak The National Railroad Passenger Corporation, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United Stat ...
to create a train service that went from Canada to Oregon, which later became the
Amtrak Cascades The Amtrak ''Cascades'' is a passenger train route in the Pacific Northwest, operated by Amtrak in partnership with the U.S. states of Washington (state), Washington and Oregon. It is named after the Cascade Range, Cascade mountain range that ...
. The 2001 Nisqually earthquake damaged most state highways around the
Seattle metropolitan area The Seattle metropolitan area is an urban conglomeration in the U.S. state of Washington (state), Washington that comprises Seattle, its surrounding Satellite city, satellites and suburbs. The United States Census Bureau defines the Seattle–T ...
and most of the budget was turned over to the
Puget Sound Puget Sound ( ; ) is a complex estuary, estuarine system of interconnected Marine habitat, marine waterways and basins located on the northwest coast of the U.S. state of Washington (state), Washington. As a part of the Salish Sea, the sound ...
region to help rebuild and repair roads and bridges. Since the beginning of the 21st century, WSDOT has been tasked with rebuilding and renovating aging portions of the highway system across the state. Several sections with poor conditions required emergency repairs in early 2023, including a large hole in an offramp to SR 99 in Seattle and broken concrete panels on I-5 in Everett and I-90 near Issaquah. WSDOT has also been tasked with replacement of 437
fish barrier A fish screen is designed to prevent fish from swimming or being drawn into an aqueduct, cooling water intake, intake tower, dam or other diversion on a river, lake or waterway where water is taken for human use. They are intended to supply debri ...
s, mainly outdated
culvert A culvert is a structure that channels water past an obstacle or to a subterranean waterway. Typically embedded so as to be surrounded by soil, a culvert may be made from a pipe (fluid conveyance), pipe, reinforced concrete or other materia ...
designs, in Western Washington to comply with a federal court order to restore
salmon Salmon (; : salmon) are any of several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the genera ''Salmo'' and ''Oncorhynchus'' of the family (biology), family Salmonidae, native ...
runs that are protected by Native American treaty rights. , 146 of the barriers had been replaced or rehabilitated; the program is expected to cost $7.8 billion by 2030.


Administration

WSDOT divides the state into six regions: the
Olympic Olympic or Olympics may refer to Sports Competitions * Olympic Games, international multi-sport event held since 1896 ** Summer Olympic Games ** Winter Olympic Games * Ancient Olympic Games, ancient multi-sport event held in Olympia, Greece bet ...
,
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— ...
, Southwest, North Central, South Central, and
Eastern Eastern or Easterns may refer to: Transportation Airlines *China Eastern Airlines, a current Chinese airline based in Shanghai * Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 192 ...
. The Northwest Region is subdivided into three more regions, which are
King County King County is a county located in the U.S. state of Washington. The population was 2,269,675 in the 2020 census, making it the most populous county in Washington, and the 12th-most populous in the United States. The county seat is Seattle ...
,
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 72nd-most popul ...
, and Baker ( Whatcom, Skagit,
Island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...
, and
San Juan San Juan, Spanish for Saint John (disambiguation), Saint John, most commonly refers to: * San Juan, Puerto Rico * San Juan, Argentina * San Juan, Metro Manila, a highly urbanized city in the Philippines San Juan may also refer to: Places Arge ...
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 Legislature, legislative branch or body of a State (country subdivision), political subdivision in a Federalism, federal system. Two federations literally use the term "state legislature": * The legislative branches of ...
. 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 and lawyer who served from 2013 to 2025 as the 23rd governor of Washington. A member of the Democratic Party, he served from 1993 to 1995 and again from 1999 to 2012 as a ...
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.


Operations

WSDOT has approximately 1,500 positions for winter operations, which includes
snow plow A snowplow (also snow plow, snowplough or snow plough) is a device intended for mounting on a vehicle, used for removing snow and ice from outdoor surfaces, typically those serving transportation purposes. Although this term is often used to ref ...
crews for the major mountain passes crossed by state highways. In the Snoqualmie Pass area, the agency has
avalanche An avalanche is a rapid flow of snow down a Grade (slope), slope, such as a hill or mountain. Avalanches can be triggered spontaneously, by factors such as increased precipitation or snowpack weakening, or by external means such as humans, othe ...
control crews that use an
M60 tank The M60 is an American second-generation main battle tank (MBT). It was officially standardized as the Tank, Combat, Full Tracked: 105-mm Gun, M60 in March 1959. Although developed from the M48 Patton, the M60 tank series was never officially ...
,
howitzer The howitzer () is an artillery weapon that falls between a cannon (or field gun) and a mortar. It is capable of both low angle fire like a field gun and high angle fire like a mortar, given the distinction between low and high angle fire break ...
s, and a mechanical tram carrying explosives to clear snow buildup before it endangers the highway.


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 (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and third largest in the world. Ferries had been in the
Puget Sound Puget Sound ( ; ) is a complex estuary, estuarine system of interconnected Marine habitat, marine waterways and basins located on the northwest coast of the U.S. state of Washington (state), Washington. As a part of the Salish Sea, the sound ...
since the 1950s.History of Washington State Ferry system
WSDOT, Retrieved March 15, 2008
There are 10 routes and 22 ferries currently operating.


Buses

WSDOT began operating the
Travel Washington Travel Washington is an intercity bus service in the U.S. state of Washington funded by the Washington State Department of Transportation (WSDOT). It has four routes that connect major cities to other modes, including Amtrak and Greyhound Lines. ...
intercity Bus program in 2007. There are currently four lines: *Grape Line, from Pasco to Walla Walla, operated by Bellair Charters and Airporter. *Dungeness Line, from
Port Angeles Port Angeles ( ) is a city and county seat of Clallam County, Washington, United States. The population was 19,960 at the 2020 census, it is the most populous city in the county, as well as the most populous city on the Olympic Peninsula. T ...
to
Seattle Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...
, operated by
Greyhound Lines Greyhound Lines, Inc. is an American operator of Intercity bus service, intercity bus services. Greyhound operates the largest intercity bus network in the United States, and also operates charter and Amtrak Thruway services, as well as interci ...
. *Apple Line, from Omak 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 was ...
via
Wenatchee Wenatchee ( ) is the county seat and most populous city of Chelan County, Washington, United States. The population within the city limits in 2010 was 31,925, and has increased to 35,508 as of 2020. Located in the north-central part of the stat ...
, operated by Northwestern Stage Lines. *Gold Line, from
Kettle Falls Kettle Falls ( Salish: Shonitkwu, meaning "roaring or noisy waters", also Schwenetekoo translated as "Keep Sounding Water") was an ancient and important salmon fishing site on the upper reaches of the Columbia River, in what is today the U.S. s ...
to
Spokane Spokane ( ) is the most populous city in eastern Washington and the county seat of Spokane County, Washington, United States. It lies along the Spokane River, adjacent to the Selkirk Mountains, and west of the Rocky Mountain foothills, south ...
, operated by Bellair Charters and Airporter.


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 The Tacoma Narrows Bridge is a pair of twin bridges, twin suspension bridges that span the Tacoma Narrows strait of Puget Sound in Pierce County, Washington, Pierce County, Washington (state), Washington. The bridges connect the city of Tacom ...
project, which built a second bridge adjacent to the original bridge, the SR 167 HOT lanes 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 at least one passenger, ...
from the SR 18 area to 180th Street, and the I-5
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 at least one passenger, ...
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 U.S. Route 2 or U.S. Highway 2 (US 2) is an east–west United States Numbered Highway spanning across the northern continental United States. US 2 consists of two segments connected by various roadways in southern Canada. ...
/ SR 529 Spur interchange. Some of the main projects in the future include the
Alaskan Way Viaduct replacement tunnel The State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel in the city of Seattle, Washington, United States. The , double-decker tunnel carries a section of State Route 99 (SR 99) und ...
, the replacement of the SR 520
Evergreen Point floating bridge The Evergreen Point Floating Bridge, also known as the 520 Bridge and officially the Governor Albert D. Rosellini Bridge, is a floating bridge that carries Washington State Route 520 across Lake Washington from Seattle to its eastern suburbs ...
, the
ferry terminals A ferry is a boat or ship that transports passengers, and occasionally vehicles and cargo, across a body of water. A small passenger ferry with multiple stops, like those in Venice, Italy, is sometimes referred to as a water taxi or water bus. ...
, the I-5
Crash barrier Traffic barriers (known in North America as guardrails or guard rails, in Britain as crash barriers, and in auto racing as Armco barriers AK Steel (formerly Armco) genericized trademark) keep vehicles within their roadway and prevent them from co ...
project and SR 704.


Accidents and deaths

Based on numbers between 2020 and late-2023, approximately 1,340 accidents or crashes annually occur in WSDOT construction zones. The number of WSDOT employees that have died in construction zone accidents since 1950 is recorded at 61.


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 a ...
*
State highways in Washington The State Highways of Washington in the U.S. state of Washington comprise a network of over of state highways, including all Interstate and U.S. Highways that pass through the state, maintained by the Washington State Department of Transpor ...


References


Further reading

*


External links

*
WSDOT Key Facts
{{authority control
Transportation Transport (in British English) or transportation (in American English) is the intentional Motion, movement of humans, animals, and cargo, goods from one location to another. Mode of transport, Modes of transport include aviation, air, land tr ...
Department of Transportation State departments of transportation of the United States Government agencies established in 1964 1964 establishments in Washington (state)