As of Thursday, August 31, 2017
OLYMPIA Travelers can use the Washington State Department of Transportation’s traffic volume charts this holiday weekend to “know before they go” and help time their travel on key routes.
In particular, this year, holiday congestion is expected on Interstate 90 near Snoqualmie Pass – especially westbound traffic.
Bridge deck repairs in the westbound lanes of I-90 between the summit of Snoqualmie Pass (milepost 52) and North Bend (milepost 34) will not be complete by Labor Day, as initially hoped.
This means only two of three lanes will be open for drivers heading westbound.
Westbound travelers should expect major delays Monday, Sept. 4, near the detour. If possible, travelers may want to leave early or possibly extend their return trip into Tuesday, Sept. 5.