Drivers using Interstate 405 should prepare for a major closure and other traffic disruptions this weekend.Southbound I-405 will fully close between Coal Creek
Drivers using Interstate 405 should prepare for a major closure and other traffic disruptions this weekend.
Southbound I-405 will fully close between Coal Creek Parkway Southeast in Bellevue and North 30th Street in Renton from 11:30 p.m. Friday, Sept. 25, until 4 a.m. Monday, Sept. 28, according to the Washington State Department of Transportation (WSDOT)
Crews working for the WSDOT will use the closure to excavate drainage crossings, replace pavement, and shift traffic as part of the I-405/Renton to Bellevue Widening and Express Toll Lanes Project.
Several southbound ramps will also close during the work:
- Coal Creek Parkway Southeast on-ramp
- Lake Washington Boulevard on- and off-ramps at Exit 9
- Northeast 44th Street on- and off-ramps at Exit 7
- Northeast 30th Street off-ramp at Exit 6
A detour will be in place, but drivers should expect additional road work along Coal Creek Parkway Southeast related to King County's Coal Creek Sewer Upgrade Project.
Kirkland ramps and Northeast 132nd Street closing
Drivers in Kirkland will face another weekend-long closure.
The northbound and southbound I-405 ramps at Northeast 132nd Street will close from 10 p.m. Friday until 5 a.m. Monday. Northeast 132nd Street beneath I-405 will also be closed.
Signed detours will be in place while crews restripe lanes at the interchange and through the roundabouts on Northeast 132nd Street.
Overnight lane reductions in Bothell
Farther north, up to three southbound I-405 lanes between State Route 527 and SR 522 will close overnight.
The lane reductions are scheduled from 11:30 p.m. Friday to 5 a.m. Saturday and from 11:30 p.m. Saturday to 8 a.m. Sunday.
Crews also plan rolling slowdowns between 12:01 and 4 a.m. Saturday and Sunday as part of the I-405/Brickyard to SR 527 Improvement Project. During slowdowns, traffic may be temporarily stopped for up to 15 minutes while crews create gaps in traffic to shift vehicles through the work zone.
Travelers are advised to allow extra time and expect congestion as traffic moves onto alternate routes and local streets.
The work is weather-dependent and could be rescheduled.
