A new pedestrian-only bridge to Colman Dock is taking shape near Seattle’s waterfront. This week and next the contractor Kiewit will place a prefabricated walkway atop columns along Columbia Street and Western Avenue. Most of the columns were poured over the past several months but the new bridge is also supported by two columns that were left in place from the Columbia Street on-ramp.
This new bridge will connect to the current Marion Street pedestrian bridge at Western Avenue, then run via Western Avenue and Columbia Street to Colman Dock. After placing the prefabricated walkway structure, electrical work and other follow-on work will occur before the bridge is complete.
The current Marion Street pedestrian bridge will remain open until sometime in August, when Colman Dock construction is ready to open the new bridge. After the new bridge is operational, Kiewit will demolish the narrow section of viaduct left in place over the current pedestrian bridge.
Above: Kiewit left this section of the viaduct standing so the pedestrian bridge beneath it can remain open during viaduct demolition.
When removing the section of freestanding viaduct structure around Marion Street, Kiewit will also remove part of the current pedestrian bridge from Colman Dock to the edge of the building just to the east. The bridge we are building this year will stay open for about five years until the City of Seattle’s Waterfront Project builds a new pedestrian bridge at Marion Street.
Traffic effects this week and next
- Columbia Street is closed from Western Avenue to Alaskan Way to place the bridge spans. This block of Columbia Street is scheduled to reopen on Wednesday, June 19. Sidewalks remain open.
- Alaskan Way will close both directions between Marion Street and Yesler Way on Monday and Tuesday nights, 6/17 and 6/18. The closure will last from 9 p.m. to 5 a.m. and include the multi-use sidewalk on the west side of Alaskan Way. People traveling north and south along this stretch of waterfront at night should expect detours and delays.
- Western Avenue between Marion and Columbia streets has been closed for several months while crews built the new pedestrian bridge. One northbound lane is scheduled to reopen on this block in the coming month.