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Learn about current transportation network improvement and preservation activities throughout the state.
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341 results
Project
2022 Eastern Region Chip Seal - South - Complete October 2022
Timeline: May 2022 - September 2022
This project will preserve multiple state routes across Whitman County in Eastern Washington.
Included in the chip seal project will be constructing bituminous surface treatment (BST), planning bituminous pavement, crack sealing, hot mix asphalt (HMA) paving, pavement repair, and…
Included in the chip seal project will be constructing bituminous surface treatment (BST), planning bituminous pavement, crack sealing, hot mix asphalt (HMA) paving, pavement repair, and…
Project
2023 Eastern Region Chip Seal - North - Complete October 2023
Timeline: April 2023 - October 2023
This project preserved multiple state routes across Pend Oreille, Stevens, Lincoln and Adams counties in Eastern Washington.
Chip sealing is the application of a special protective wearing surface to an existing pavement. Included in the chip seal project will be constructing…
Chip sealing is the application of a special protective wearing surface to an existing pavement. Included in the chip seal project will be constructing…
Project
2023-24 Northwest Regional Pavement Repairs and Breakaway Cable Terminal
Timeline: Fall 2023 - Summer 2024
A regional project beginning in March 2024 updated 24 guardrails and attenuators along Interstates 5, 90 and 405, US 2 and State Routes 522 and 527 in King, Snohomish and Whatcom counties. The breakaway cable terminals, or guardrail protective end caps, face oncoming traffic. This project also…
Project
2024 Eastern Region Chip Seal - Complete August 2024
Timeline: May 2024 – August 2024
This project preserves multiple state routes across Spokane, Lincoln, Whitman, and Pend Orielle Counties in Eastern Washington.
Chip sealing is the application of a special protective wearing surface to an existing pavement. Included in the chip seal project will be constructing…
Chip sealing is the application of a special protective wearing surface to an existing pavement. Included in the chip seal project will be constructing…
Project
2024 OR Regionwide Chip Seal
Timeline: June 2024 - September 2024
This project will extend the life of the highway and reduce the frequency of emergency repairs on sections of four state highways in Clallam, Grays Harbor, Jefferson and Pierce counties.
Chip sealing is a process where crews apply a protective surface to existing pavement.
Chip sealing is a process where crews apply a protective surface to existing pavement.
Project
21-23 SWR Regionwide Bridges Concrete Deck Patching - Complete June 2023
Timeline: Summer 2022 - Summer 2023
Between summer 2022 and 2023, WSDOT's contractor, Granite Construction Company, began work on a pilot program to rehabilitate the concrete decks of several bridges throughout southwest Washington. Crews removed all non-cement patches and replaced them with cement material, extending the useful…
Major Project
Alaskan Way Viaduct Replacement Program
Timeline: 2007 - 2023
The Alaskan Way Viaduct Replacement Program consists of 30 projects led by the Washington State Department of Transportation, King County, the City of Seattle and the Port of Seattle. The Federal Highway Administration is a partner in this effort.
Project
Anacortes Terminal Tollbooth Replacement Project
Timeline: May 2023 - Winter 2024
The Anacortes Ferry Terminal has provided a gateway to the San Juan Islands and Sidney B.C. for more than 50 years with only minor changes made to the terminal. Washington State Ferries (WSF) plans on updating all four Anacortes Ferry Terminal tollbooths to better serve the ferry customers who use…
Project
Bainbridge Ferry Terminal Overhead Loading Fixed Walkway Replacement
Timeline: 2018 - Early 2024
The ferry route between Seattle and Bainbridge Island is the busiest in the system for walk-on passengers. This project replaces the existing overhead wooden walkway with a wider, safer concrete and steel structure built to current seismic code.
Project
Battery Street Tunnel and North Surface Streets - Complete July 2021
Timeline: February 2019 - July 2021
After SR 99 in Seattle was aligned to run through the SR 99 tunnel, the Battery Street Tunnel was decommissioned and filled and the tunnel's northern approach built into a new arterial street (Seventh Avenue North) featuring bus lanes and reconnected intersections.
Project
CW Branch – SR 904 Betz Road Crossing – PCC - Completed August 2024
Timeline: July 2024 - September 2024
This project will repave the railroad crossing utilized by the Washington Eastern Railroad at the intersection of State Route 904 and Betz Road in Cheney.
Project
East Jefferson County Remove Fish Barriers - Completed November 2023
Timeline: May 2023 - November 2023
This project removed fish barriers at two locations: one on State Route 104 at Shine Creek, and the other on State Route 19 at Swansonville Creek.
At both locations, 18-foot three-sided culverts were constructed.
At both locations, 18-foot three-sided culverts were constructed.
Project
Eastern Region – Bridge Deck Preventative Preservation – Patching - Complete August 2022
Timeline: May 2022 - August 2022
This project will conduct spot repairs on concrete bridge decks by patching potholes and replacing fatigued sections of concrete on seven bridges within Adams, Franklin, Lincoln, Stevens, and Whitman Counties. Once the project is complete, the service life of the bridges will be extended on rural…
Project
Ferries - Mukilteo Multimodal Terminal Project - Complete December 2020
Timeline: Spring 2015 - December 2020
The Mukilteo/Clinton ferry route is part of State Route 525, the major transportation corridor connecting Whidbey Island to the Seattle-Everett metropolitan area. It is one of the state's busiest routes, with more than 4 million total riders every year. By 2040, walk-on ridership during the…
Project
Ferries - Seattle Multimodal Terminal at Colman Dock Project
Timeline: Summer 2017-2024
Washington State Ferries is replacing the aging and seismically vulnerable Colman Dock in Seattle to maintain its critical role as a regional multimodal transportation hub.
Key project elements include: a concrete and steel trestle, main terminal building, entry building (with retail…
Key project elements include: a concrete and steel trestle, main terminal building, entry building (with retail…
Major Project
Ferry system electrification
Timeline: 2020-2040
Washington State Ferries (WSF) will convert our ferry system, the largest in the country, to hybrid-electric power by 2040 following mandates from the Washington legislature and governor. Transitioning to a hybrid-electric fleet is necessary to reduce emissions, ensure resiliency, and reduce…
Project
I-405 - BN RR Br to Ped Trail Br & I-90/E Fork Issaquah Creek - Seismic
Timeline: Summer 2022- Spring 2024
In winter 2023, our contractor began a project on the I-405 corridor, in Tukwila and Bellevue, to strengthen several overpasses so they can better withstand a major earthquake. They will place steel "jackets" around columns that support overpasses to help keep the concrete together in an…
Project
I-405/Brickyard to SR 527 Improvement Project
Timeline: The project is expected to complete construction in 2028 in alignment with Sound Transit Bus Rapid Transit.
The I-405/Brickyard to SR 527 Improvement Project enhances four and a half miles of the corridor, primarily in Bothell, from just south of the State Route 522 interchange and ending at the SR 527 interchange. WSDOT, Sound Transit and design-build contractor Skanska USA Inc., will deliver…
Project
I-405/Lind Ave SW Bridge – Span replacement - Complete May 2024
Timeline: Completed
In fall 2023, contractor crews started construction to replace the damaged northern span of the Lind Avenue Southwest bridge over southbound Interstate 405 in Renton. The Lind Avenue overpass is now back open.
Project
I-405/Northeast 132nd Street Interchange Project
Timeline: Spring 2022 - Spring 2024
WSDOT and design-build contractor Graham Contracting, Ltd. will construct a new on-ramp to northbound I-405 and a new off-ramp from southbound I-405 at Northeast 132nd Street in Kirkland. This type of interchange is known as a half-diamond. After this project is complete, travelers will have the…
Project
I-405/Northeast 85th Street Interchange and Inline BRT Station Project
Timeline: December 2022 - January 2027
WSDOT, Sound Transit, and design-build contractor Graham Contracting, Ltd. are working to reconstruct and improve the I-405/Northeast 85th Street interchange. This project design supports Sound Transit's Stride Bus Rapid Transit (BRT), improves transit connections on Northeast 85th Street, and…
Project
I-405/Renton to Bellevue Widening and Express Toll Lanes Project
Timeline: 2015 - 2025
Travelers on Interstate 405 between Renton and Bellevue experience one of the state’s worst commutes. The I-405/Renton to Bellevue Widening and Express Toll Lanes project includes multimodal transportation and safety improvements to offer more reliable travel choices and keep drivers, transit…
Project
I-405/Ripley Lane Stream Connection Project
Timeline: The project is currently in the design and environmental stages. We anticipate construction will be complete by 2025.
The Ripley Lane Stream Connection Project is part of a series of fish barrier corrections planned by WSDOT for the I-405/SR 167 corridor. The Ripley Lane Stream Connection Project will construct new stream channels by combining two culverts into one open channel. We determined that the proposed…
Major Project
I-405/SR 167 Corridor Program
Timeline: We delivered the first project in 2005, 15 additional projects by 2015 and continue towards construction readiness on funded projects.
The I-405/SR 167 Corridor Program stems from the I-405 Master Plan and SR 167 Master Plan, foundational documents that guide project development, funding and delivery. The I-405 Master Plan alone includes over 150 projects designed to improve travel between Lynnwood and the Renton/Tukwila area.…
Project
I-5 - 179th St. Interchange - Interchange Improvements
Timeline: Early 2024 - 2030
This project aims to improve mobility for travelers who use the I-5 - Northeast 179th Street interchange. Signalized intersections will be removed and replaced with roundabouts at the on- and off-ramps to and from I-5. Roundabouts help to relieve congestion by keeping people moving safely through…
Project
I-5 - Gravelly-Thorne Connector
Timeline: 2025-2026
This project will create new non-motorized access for people between the Tillicum and Woodbrook neighborhoods.
Project
I-5 - M Street to Portland Avenue - HOV - Complete November 2018
Timeline: 2014 - 2018
This project widened northbound and southbound I-5 so that each direction has four general-purpose lanes each and one HOV lane from M Street to Portland Avenue in Tacoma
To widen both directions of I-5, WSDOT rebuilt the Pacific Avenue and East McKinley Way bridges over I-5 and…
To widen both directions of I-5, WSDOT rebuilt the Pacific Avenue and East McKinley Way bridges over I-5 and…
Project
I-5 - Mounts Rd. to Center Dr. - Auxiliary Lane Extension - Complete September 2018
Timeline: 2016-2018
WSDOT extended the auxiliary lane south approximately 1.5 miles, so that it starts at the Mounts Road overpass. Trucks approaching the weigh station along with entering and exiting traffic use this lane while the majority of traffic uses the adjacent three through lanes.
To…
To…
Project
I-5 - Mounts Rd. to Steilacoom-DuPont Rd. - Corridor Improvements
Timeline: 2023-2026
This project is intended to help relieve chronic traffic congestion and improve mobility along I-5 near Joint Base Lewis-McChord. Crews will rebuild the Steilacoom-DuPont Road (Exit 119) interchange and extend I-5 HOV lanes to Mounts Road.
Major Project
I-5 - Mounts Road to Thorne Lane I/C - Corridor Improvements
Timeline: July 2015 to December 2025
In July 2015, the Washington State Legislature included $495 million to fund the I-5 Mounts Road to Thorne Lane Interchange - Corridor Improvements project, as part of the Connecting Washington transportation revenue package. The project is funded through a 10 year period, from 2015-2025.
166,800 electric vehicle
registrations in Washington in 2023, up from 114,600 in 2022.
87 wetland compensation sites
actively monitored on 918 acres in 2023.
25,000 safe animal crossings
in the Snoqualmie Pass East Project area since 2014.