The permanent north span of the I-5 Skagit River bridge is ready to be put into place Saturday night an operation that contractor Max J. Kuney says it can accomplish in only 12 hours.
Drivers will be detoured through the Riverside Drive bridge between Mount Vernon and Burlington overnight, from 7 p.m. to 7 a.m., the state Department of Transportation announced today. Traffic will exit I-5 at George Hopper Road to the north, or College Way south of the river, then drive through business districts.
A time-lapse video, available here, shows how over several weeks, a crane has lifted 16o-foot long concrete girders and set them next to I-5, on platforms above the river. Road decks are now being built on the girders. On Saturday night, hydraulic jacks, Teflon pads, and steel rails will be used to slid the 900-ton span several yards upriver, right after the current temporary bridge is detached.