I-5

Route ID
005

UPDATE - Announcing ‘Conechella:’ Multiple highway closures across greater Puget Sound weekend of Aug. 22-25

UPDATE: The series of westbound SR 18 lane, ramp and directional closures has been postponed and will be rescheduled at a later date. The scheduled work on the SR 99 First Avenue Bridge has also been canceled. The information has been removed in the news release below.

Northbound I-5 reduced to one lane overnight in DuPont July 25 and 26

UPDATE – The Saturday night total closure of northbound Interstate 5 in DuPont is cancelled. The work was completed during the evening of Friday, July 25.

Steilacoom-DuPont Road overpass to be closed with detours as new overpass takes shape

DUPONT – Nighttime travelers who use northbound Interstate 5 through DuPont could see major congestion during the nights of Friday, July 25 and Saturday, July 26.

WSDOT opens section of new SR 509 Expressway in SeaTac June 28

The first mile of the expressway extends from I-5 to South 24th Street

SEATAC – The first section of a new expressway is about to open in the Puget Sound area, providing travelers with another commuting option in south King County.

At 5:09 a.m. on Saturday, June 28, the Washington State Department of Transportation will open the first mile of the State Route 509 Expressway. The first mile of the SR 509 Completion Project stretches between Interstate 5 and 24th Avenue South in SeaTac. 

I-5 fish passage project construction begins Wednesday, April 30, south of Bellingham

Project will remove 17 barriers along Friday, Lake and Chuckanut creeks 

BELLINGHAM – A three-year project to remove 17 barriers to fish migration along a 6-mile stretch of Interstate 5 in Skagit and Whatcom Counties will begin construction Wednesday, April 30. 

Contractor crews working on behalf of the Washington State Department of Transportation will begin overnight work on I-5 south of Bellingham at 8 p.m. Wednesday, April 30.

Slow down – lives are on the line.

Drive the posted speeds, they’re there for your safety.

Phone down, eyes up.

Pay attention – both to workers directing you and to surrounding traffic.

Stay calm

Expect delays, leave early or take an alternate route if possible; no appointment is worth risking someone’s life.