WSDOT schedules overnight road work in King, Pierce Counties

From Seattle’s Downtown Tunnel to the Fife Curve, drivers will see late-night closures this week.

The Washington State Department of Transportation (WSDOT) is conducting maintenance work near the SR 99 downtown Tunnel. This work will not close the tunnel, but instead the southbound off-ramp to South Royal Brougham Way will close both Wednesday and Thursday, between 9 p.m. and 5 a.m.

Crews will be removing vegetation and prepping for replanting in the spring.

SR 99 in Des Moines

WSDOT crews will continue with the Paving and ADA Compliance project this week between Des Moines and SeaTac. This project upgrades more than 30 sidewalk ramps to American with Disabilities Act (ADA) standards and repaves 2 miles of SR 99.

Wednesday through Friday, drivers will be reduced to a single lane between SR 516 and S. 216th Street, beginning as early as 8 p.m. through 5 a.m. Contractors will be removing temporary signals that were installed during construction, which is now in the final stage.

At least one lane will remain open during work hours. Drivers who typically use this route to access the SEA airport should expect delays.

I-5, SR 509 in SeaTac

Drivers will see lane and ramp closures through SEA this week in the I-5 and SR 509 interchange vicinity. WSDOT crews will keep busy by installing signage, performing landscaping projects, and continuing with pavement work. This is part of the SR 509 Completion Project.

Interstate 5 ramp closures

Tuesday through Wednesday morning:

• 9:30 p.m. to 3:30 a.m. – The northbound I-5 exit to SR 516 will close overnight. A signed detour will be in place.

Thursday through Friday morning:

• 9:30 p.m. to 3:30 a.m. – The northbound I-5 exit to 24th Avenue S. will close overnight. A signed detour will be in place.

SR 509 lane closures

Tuesday through Wednesday morning:

• 8 p.m. to 5 a.m. – One lane in each direction of SR 509 will close overnight from S. 156th Street to S. 168th Street.

I-5, SR 509, SR 99, 54th Avenue E. in Fife

WSDOT crews will be working on a number of projects simultaneously through Fife as they progress on the SR 167 Completion Project. Work includes completing sidewalks, electrical work, water valve work, and bridge work.

I-5 closure information

Tuesday to Friday morning:

• 8:30 p.m. to 4 a.m. – Up to three lanes of northbound I-5 will close from 54th Avenue E. to Porter Way, nightly. Two lanes remain open.

Tuesday to Thursday morning:

• 11 p.m. to 5:15 a.m. – Up to three lanes of southbound I-5 will close from Porter Way to 54th Avenue E. nightly. Two lanes remain open.

Thursday to Friday morning:

• 8:30 p.m. to 5:45 a.m. – Up to two lanes of southbound I-5 will close from Porter Way to 54th Avenue E. Three lanes remain open.

Friday to Saturday morning:

• 11 p.m. to 7 a.m. – Up to three lanes of northbound I-5 will close from 54th Avenue E. to Porter Way. Two lanes remain open.

SR 509 closure information

Thursday to Friday morning:

• 8 p.m. to 5 a.m. – One lane of northbound SR 509 will close from Alexander Avenue to Taylor Way. One lane remains open.

SR 99 closure information

Tuesday to Thursday afternoon:

• 7 a.m. to 3 p.m. – One lane of southbound SR 99 east of the Wapato Way roundabout will close daily. One lane remains open.

54th Avenue East closure information

Tuesday to Thursday morning:

• 8 p.m. to 6 a.m. – One lane of northbound 54th Avenue E. between Fourth Street E. and Eighth Street E. will close overnight. One lane remains open.

Wednesday to Friday morning:

• 8 p.m. to 6 a.m. – One lane of southbound 54th Avenue E. from Eighth Street E. to Fourth Street E. will close. One lane remains open.

Nate Connors is a traffic reporter for KIRO Newsradio. Follow him on X. Read more of his stories here. Submit news tips here.

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