Westbound SR 520 will close from 11 p.m. Friday, Oct. 4 to 5 a.m. Saturday, Oct. 5.The roadway will be closed from 92nd Avenue Northeast to Montlake Boulevard in Seattle to continue work on the West Connection Bridge project

During the closure, crews will use concrete delivery trucks and pumping equipment to build concrete column foundations on Lake Washington, just to the north of SR 520.