Denny Way, which tends to be busy on summer weekends, will close Saturday from 6 a.m. to 8 p.m. where it passes over I-5, so an expansion joint can be replaced. And the work will be noisy, the city says.
Detours will take eastbound traffic on the Olive Way overpass, and westbound traffic on Pine Street through the X-shaped Boren Avenue flyover crossing. Meanwhile, King County Metro bus routes 10, 43 and 49 will be detoured to avoid the Pine Street and Broadway intersection, where electrical work for the future streetcar will close the area Saturday and Sunday.
All that adds up to a mess for the western slope of Capitol Hill, with spillover effects to Mercer Street and South Lake Union.
A few events will be under way, including a Seafair bike parade from 10 a.m. to 1 p.m., surrounding Westlake Park. Airport Way South through Georgetown will close at noon and through the evening Saturday for a neighborhood festival. Repaving will close one or two lanes of Rainier Avenue South at South Charles Street, next to I-90, throughout the weekend.
But unlike last weekend, the Highway 520 bridge will remain open, to carry traffic to and from the University of Washington graduation activities. Only the 108th Avenue Northeast/Northup Way ramps to Highway 520 will close, for drainage and signal work, all weekend.