Eastbound Highway 16 and the Union Avenue on-ramp will be closed for five nights next week while crews set girders on the new eastbound Nalley Valley viaduct.
Closures are scheduled for March 20, 21, 23, 27 and 28.
The work is part of I-5/SR 16 Eastbound Nalley Valley project, which replaces the original eastbound Highway 16 structure that spanned Nalley Valley and completes the Highway 16/Sprague Avenue interchange.
The first portion of the interchange overhaul, the westbound Nalley Valley viaduct, opened in June 2011.
UPDATE as of 4:23 p.m. All lanes have been cleared, according to WSDOT.
INITIAL POST: An accident that happened about 4 p.m. at southbound Interstate 5 and 84th Street South is blocking the two right lanes of the freeway, according to the state Department of Transportation.