This weekend (Oct. 24 and 25) I-90 detours return again with an Eastbound closure, related to light rail preparations inside the Mt Baker and Mercer Island tunnels.

Starting at 11 p.m. on Friday, Oct. 23, the WSDOT will funnel eastbound traffic from Seattle to the center express lanes for construction purposes. The detour will end by 5 a.m., Monday, Oct. 26.

Eastbound closures typically have limited impacts on Mercer Island residents.

Islanders can exit the eastbound express lanes at Island Crest Way or 77th Avenue S.E.

Drivers wishing to reach Bellevue from Mercer Island can enter the mainline eastbound I-90 roadway at Island Crest Way or East Mercer Way.

Click here for detour map and exit details.
Click here for detour calendar.

There are 23 more weekend directional closures of I-90 planned between now and mid-2017 while the State builds all-day bus and carpool lanes next to the regular lanes. This work will allow the center I-90 roadway to be dedicated to Sound Transit light rail construction in 2017.