(southbound across the Spokane River)
See the latest images and a full length time-lapse video or condensed time-lapse video of construction on the southbound Sullivan Road Bridge across the Spokane River.
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The effort to replace the southbound Sullivan Road Bridge across the Spokane River (the westernmost of two bridges that cross the river at that location) began when the October 2009 annual bridge inspection rated its condition as Structurally Deficient. Built in 1951, the aging bridge is a critical transportation link, carrying about 25,000 vehicles across the river and to I-90 each day, including heavily loaded commercial vehicles.
Almost immediately, the city began planning and seeking funding assistance for replacement. Reluctantly, the city posted temporary weight restrictions in June 2011 to help prolong the life of the bridge. Shortly afterward, the City Council approved funding for temporary repairs so the weight restrictions could be lifted and use of the bridge by heavily loaded vehicles could resume until it was replaced.
While the bridge was not at risk of failure, annual inspections showed signs of continued deterioration. The deterioration was typical in bridges of its age, and included cracking in the girders as well as deterioration of the driving surface. De-icing agents were used over the years that also resulted in high chloride content in the bridge's concrete, which can contribute to further deterioration.
The new bridge opened to traffic in August 2016.
Funding was secured for the $15,321,000* modified estimate of the cost to replace the bridge, and included:
*Project also included $316,500 of utility relocation work funded by Avista, CenturyLink, and Zayo Communications.
For additional information, please call (509) 720-5000.