Completed Corridor Safety Projects

Since the Corridor Safety Program began in 1992, a total of 33 projects have launched throughout the state of Washington. There are currently 5 active projects and 28 completed projects.

East Trent Traffic Safety Project

State Route 290 from mile post 0.00 to 12.00, kick-off date 2/4/92

Snohomish County Traffic Safety Project

State Route 9 from mile post 0.00 to 21.99, kick-off date 4/23/92

US 97 Traffic Safety Project

State Route 97 from mile post 62.00 to 74.99, kick-off date 5/21/93

Guide Meridian Traffic Safety Project

State Route 539 from mile post 2.00 to 15.16, kick-off date 10/7/93

SR 14 Traffic Safety Project

State Route 14 from mile post 13.50 to 19.00, kick-off date 12/8/93

Mountain Highway Traffic Safety Project

Encompassed approximately 12 miles of State Route 7 in south Pierce County, extending from the intersection with State Route 702 north to the intersection of 184th Street South. This project kicked-off in May 2005 and closed in August 2007 showing a 7% increase in total collisions; a 13% decrease in injuries; a 58% decrease in fatal and serious injury collisions; and a 1% increase in alcohol-related collisions.

D-Zone Traffic Safety Project

State Route 2 from mile post 286.87 to 297.25, kick-off date 6/29/95

Island/Skagit Counties Traffic Safety Project

State Route 20 from mile post 30.77 to 50.84, kick-off date 4/30/96

Yakima River Canyon Traffic Safety Project

State Route 821 from mile post 0.00 to 25.21, kick-off date 5/22/96

Y-Zone Traffic Safety Project

State Route 2 from mile post 295.60 to 313.44 and State Route 395 from mile post 166.58 to 183.69, kick-off date 8/26/97

Lower Yakima Valley Traffic Safety Project

State Route 22 from mile post 0.70 to 29.76, State Route 82 from mile post 33.84 to 75.37, State Route 97 from mile post 27.21 to 76.36, State Route 223 from mile post 0.00 to 3.81, State Route 241 from mile post 6.25 to 24.09. This project also included other Yakima County roads not listed. Kick-off date 10/28/97.

Burlington/Sedro Woolley Traffic Safety Project

State Route 20 from mile post 54.51 to 66.89, kick-off date 5/12/99

97A Traffic Safety Project

State Route 97A from mile post 199.83 to 239.64, kick-off date 5/27/99

Columbia Gateway Traffic Safety Project

State Route 395 from mile post 228.43 to 241.49, kick-off date 6/5/99

Lake Stevens Traffic Safety Project

State Route 9 from mile post 12.14 to 20.55 and State Route 92 from mile post 0.00 to 8.26, kick-off date 7/22/00

Airway Heights Traffic Safety Project

State Route 2 from mile post 274.00 to 281.75, kick-off date 10/12/00

SR4 Traffic Safety Project

State Route 4 from mile post 45.69 to 62.28, kick-off date 6/6/02

Moses Lake Traffic Safety Project

State Route 17 from mile post 27.36 to 50.88, kick-off date 6/13/02

Cross-Kitsap Corridor

State Route 3 (mile post 28.23 to 49.01), State Route 310 (mile post 0.00 to 1.84), and State Route 304 (mile post 1.67 to 2.63). Kick-off date 4/14/04. End date 9/30/05.

Memorial Highway Traffic Safety Project

State Route 904, project end date 4/30/06

Cape Horn Traffic Safety Corridor

State Route 14 from mile post 21.77 to 37.04, kick-off date 5/12/04, project end date 5/31/06

Fourth Plain Traffic Safety Project

Encompassed seven miles of roadway on Fourth Plain Boulevard within the city limits of Vancouver. This project distinguished itself as the first project that lies totally within a city’s boundary. This project opened in October 2004 and closed on October 7, 2006. Final results show a decrease in total collisions of 14%, injury collisions by 19%, and fatal disabling collisions down by 19%.

Othello Traffic Safety Project

State Route 26 from mile post 33.47 to 50.83, kick-off date 11/18/04

Francis to Nine Mile Traffic Safety Project

The State Route 291 Corridor consisted of an 11-mile section of roadway extending from Division Street in the city of Spokane to the Stevens County line. This corridor opened in April 2005 and closed in August 2007 showing a 40% reduction in injury collisions and a 30% reduction in total collisions.

Driving 101 Traffic Safety Project

The US101 Corridor was approximately 32 miles in length, extending from State Route 112 (Laird's Corner) east through the cities of Port Angeles and Sequim to the Clallam County line, just east of Chicken Coop Road. The corridor began in December 2004 and closed in April 2007, showing an increase of total collisions by 1%, a decrease in injuries by 16%, and a decrease in fatal/disabling collisions by 21%.

Highway 26 Traffic Safety Project

This project consisted of a 20-mile section of State Route 26 extending from the Adams County line to a point just east of the city of Othello. The project opened in November 2004 and closed in September 2006, showing total collisions down by 21%; angle collisions down 30%; alcohol-related collisions down 24%; fatal/disabling collisions down 88%; and total injuries down 25%.

Upper Skagit Valley Corridor

This project consisted of approximately 26 miles of State Route 20, extending from Sedro-Woolley to, and through, the city of Concrete. This corridor kicked-off in May of 2005 and wrapped-up in August 2007. Total collisions on this corridor decreased by 3%; fatal and serious injury collisions decreased by 31%; alcohol-related collisions increased by 35%; and total injuries increased by 1%.

Mill Plain Traffic Safety Corridor

The Mill Plain Traffic Safety Corridor in the City of Vancouver extended 9.7 miles from Interstate 5 to 192nd Avenue. Project duration 11/06-10/08.

Kittitas/Vantage Highways Traffic Safety Project

This project consisted of approximately 17 miles of county routes and included parallel sections of Vantage and Kittatas highways. The Vantage Highway portion extended from the City of Ellensburg to Parke Creek Road, a distance of 11 miles. The Kittitas Highway portion extended from Ellensburg to the City of Kittitas, a distance of seven miles. Kick-off date 9/04.

Rainier Avenue Traffic Safety Project

This is the second traffic safety corridor in Washington State that lies completely within city limits – in this instance, the city of Seattle. The corridor is eight miles in length, extending north from 75th Avenue South to South Dearborn Street. This project kicked off in April 2006 and closed in December 2008. Statistics from this project period show a 1% decrease in total collisions; an 8% decrease in injuries; a 19% increase in alcohol-related collisions; and a 22% increase in fatal and serious injury collisions.p>

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