While the replacement of Seattle’s aging Alaskan Way Viaduct plods toward a definite construction start date, long-needed improvements are well on the road to completion on another of the city’s critical elevated structures.
PCL Construction Services Inc., Seattle, has completed 257 drilled shafts for columns that will support the widening of the 3,000-ft-long Spokane Street Viaduct. One of Seattle’s five busiest roads, the viaduct carries up to 70,000 vehicles a day between Interstate 5 and the West Seattle Bridge and serves as a primary truck route for the Port of Seattle and the Harbor Island industrial area.