Construction on a project to replace the Post Street Bridge is set to begin this spring and continue until at least the end of 2021. Design work is complete, and the construction bids are being sought for the project.
The project is designed to keep the bridge's concrete arches and retain its historic look. When complete, the bridge will have one northbound lane for vehicle traffic as well as pedestrian and bicycle routes. It will also support the Centennial Trail. The bridge also will continue to support a major wastewater interceptor line.
Work is slated to begin first in Post Street, just south of the bridge, with crews expecting to start in late April with the replacement of a water main. Demolition of the bridge itself is expected to begin in early May. At that point, the bridge will be closed to pedestrian and bicycle traffic.
As a result, the bridge project will interrupt pedestrian and bicycle travel. To reach downtown from the north bank of the river, pedestrians and bicyclists will need to travel across the Monroe Street Bridge or the Howard Street Promenade in Riverfront Park. Parking in Riverfront Park lots on Post Street and at the northwest corner of Summit Boulevard and Lincoln Street also will be impacted by the bridge construction and additional construction in Riverfront.
The below map shows the construction areas in Riverfront and for the Post Street Bridge and provides information on pedestrian and bicycle routes through the area.
Download Map (PDF 1.4 MB)
The 333-foot-long Post Street Bridge was built in 1917, spanning the Spokane River between its two sets of magnificent falls. The bridge is a reinforced concrete open spandrel deck arch bridge. After more than 100 years of use, the bridge is in need of replacement.
In May 2019, the Post Street Bridge was closed to all vehicular traffic, following a structural analysis that determined the bridge could not safely continue to carry those loads. Since that time, the bridge has been used exclusively by bicyclists and pedestrians.
Project Number: 2017105
Construction Estimate: $21,000,000
Project Location: Post Street Bridge, over Spokane River
Description: Replace the Post Street Bridge across the Spokane River and associated utilities.
Contractor: To be determined
Project Manager - Design: Mark Serbousek, 509.625.6700, email@example.com
Project Manager - Construction: Construction Management, 509.625.7722
Construction Start Date: Spring 2020
Substantially Completed Date: Winter 2022
Award Date: To be determined
Pre-Bid Prime Contractor Attendee List (PDF 72 KB)
To reduce pavement degradation, the City of Spokane's Pavement Cut Policy is in effect for all street-related projects.