Drivers will want to plan ahead as the Washington State Department of Transportation is rolling out several closures over the weekend and spilling into next week.
State Route 18 closure at I-90
Drivers along State Route 18 (SR 18) at I-90 will see big changes following a 5-day closure at this busy interchange near the city of Snoqualmie. The Washington State Department of Transportation (WSDOT) decided on this unprecedented closure to tackle a number of projects at once, as opposed to taking a series of weekend closures to address the next phase of the I-90/SR18 – Diverging Diamond Interchange Project.
Crews will install new drainage and electrical crossings, pave the new roadway, and build concrete islands that will form the southern portion of the new I-90/SR 18 diverging diamond interchange. Work also includes building a left turn pocket for traffic turning from westbound SR 18 onto Southeast 104th Street and a signalized U-turn south of I-90 that will allow eastbound SR 18 traffic to head westbound toward Auburn. Both will be operational when SR 18 reopens on Wednesday, May 21.
During the closure, there will be no access on SR 18 underneath the I-90 overpass. Drivers will be able to access Snoqualmie Parkway from westbound I-90 only, and accessing SR 18 will only be open from eastbound I-90. Detours will be in place…