I-5 columbia river interstate bridge - replacement

The U.S. Department of Transportation awarded a $10,000,000 Project Grant under the National Infrastructure Project Assistance (Mega Projects) program (CFDA 20.937) to the Washington State Department of Transportation (WSDOT) on January 17, 2025. The grant funding will be used to reevaluate the purpose and need, develop an updated financial plan, reengage stakeholders, and perform preliminary engineering and design for the replacement of the I-5 Columbia River Interstate Bridge. The project aims to update the I-5 bridges with new seismically resilient structures, modify several interchanges, install toll facilities, enhance bus rapid transit and light rail service, and construct new active transportation facilities. This federal grant award supports a large-scale, regionally significant transportation infrastructure project that will generate substantial economic, mobility, and safety benefits.

Project description

Reevaluate the purpose and need and environmental permits; develop an updated financial plan; reengage with project stakeholders; perform preliminary engineering and design; develop plans, specifications, and a cost estimate; and advertise the project. Work being considered, described in the environmental impact statement, includes the following: 1) updating the i-5 (5/1W and 5/1E) and the north portland harbor bridges over the columbia river with new seismically resilient bridges. 2) modifing three interchanges in oregon (north victory blvd., marine DR., and hayden island) and four in washington (SR 14, e mill plain blvd., e fourth plain blvd., and SR 500/39TH ST.), with auxiliary lanes added between them. 3) installing toll facilities and implementing tolling in oregon and washington. 4) enhancing and extending bus rapid transit (vine) and light rail transit (max) service, including over the two new i-5 bridges. Constructing a transit hub that links the two. Expanding and upgrading existing transit operations and maintenance facilities. 5) constructing new active transportation facilities.