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Overnight closures along SB I-5 in Mountlake Terrace

Closure on I-5 ramps and highway for Lynnwood Link construction planned for June 26

LYNNWOOD, Wash., June, 22, 2021 – Crews working on the Lynnwood Link Extension will be closing the southbound lanes of I-5 South from 220th Street SW to SR 104 in Mountlake Terrace overnight on Saturday, June 26 for construction that will allow the light rail alignment to cross over the highway. Northbound traffic lanes will remain open.

Starting at 11 pm on Saturday, June 26, crews will close the southbound I-5 lanes between SR 104 and 220th Street SW until approximately 7:30 a.m. Sunday morning, June 27. During the closure, traffic will be detoured on SR 99 and SR 104 before rejoining I-5, There will be a uniformed police officer present at the 220th St SW I-5 SB on and off ramps during this closure to help manage traffic.

The closure is necessary for a large concrete pour for the future elevated guideway over I-5. The work being performed will be along the southbound shoulders as well as in the center median of I-5 near the Mountlake Terrace Freeway station. 

Lynnwood Link will extend light rail into Snohomish County, serving four stations, Shoreline South/148th, Shoreline North/185th, Mountlake Terrace and Lynnwood City Center.

Upon opening in 2024, riders will enjoy fast, frequent and reliable service between south Snohomish County and the University of Washington, downtown Seattle, the Eastside, Sea-Tac Airport and more. For more information, please visit

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