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Weekly update of construction closures in Northwest Region: King, Snohomish, Skagit, Island and Whatcom Counties

Last update: 7:20 a.m. Tuesday, March 21

I-5 SEATTLE: Seattle City Light crews will perform rolling slowdowns on northbound and southbound I-5 between Mercer Street and Northgate Way from 11:59 p.m. to 4 a.m. nightly, March 20-23. Traffic will be fully stopped for up to 25 minutes intermittently during these hours.

I-405 RENTON: Two lanes of northbound I-405 at Northeast 44th Street will be closed from 9 p.m. to 4:30 a.m. nightly, March 20-23.

SR 164 AUBURN:A single lane in either direction of SR 164 between 408th Street and 196th Avenue Southeast will be closed from 9 a.m. to 3 p.m. daily, March 20-24. A pilot car will alternate traffic through the open lane.

SR 520 SEATTLE TO BELLEVUE: All lanes of eastbound SR 520 between Montlake Boulevard and Lake Washington Boulevard will be closed from 11 p.m. to 5 a.m. Thursday, March 23.

I-90 BELLEVUE TO SEATTLE: Westbound I-90 traffic will be reduced to one lane near Bellevue Way and routed to the express lanes from 11 p.m. Friday, March 24, to 5 a.m. Monday, March 27.

I-5 EXPRESS LANES: The I-5 express lanes will close at 8 a.m. daily, March 25 & 26 for maintenance work. The lanes will open northbound by 1:30 p.m.

For closures on major highways, please see the specialized routes listed below:

downtown seattle map

Downtown Seattle/SODO

Looking for downtown Seattle/SODO construction closures? This page lists closures on state highways and city streets in downtown Seattle, near the stadiums, international district and ferry terminals.

I-5: Federal Way to Blaine


Looking for construction closures on I-5? This page lists closures from Federal Way to Blaine.

I-405: Renton to Lynnwood


Looking for construction closures on I-405? This page lists closures from Renton to Lynnwood.

I-90 & SR 520


Looking for construction closures on the eastside? This page lists closures on SR 520 from Seattle to Redmond and on I-90 from Seattle to North Bend.

SR 167: Auburn to Renton 


Looking for construction closures on SR 167? This page lists closures from Auburn to Renton.

Other regional highways by county:

| King County | Snohomish County | Skagit County | Island County | Whatcom County |

**If a highway is not listed, there are no scheduled lane closures at this time. However, emergency lane closures may still occur.**

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