Offsys, SQ road over passasikwana CR bridge #3, custer CO

The Federal Highway Administration awarded the Idaho Department of Transportation a $641,192 Formula Grant under the Highway Planning and Construction program (CFDA 20.205) on February 27, 2025. The grant funding will be used to rehabilitate an existing bridge by addressing minor erosion, installing hazard markers, cleaning the deck, sealing the deck surface, and adding riprap along the south abutment. The bridge is currently in fair condition with some cracking and spalling of the deck and a girder. The grant will also address approach improvements such as potholes and erosion. As a state transportation agency, the Idaho Department of Transportation will oversee the infrastructure upgrades to improve the condition and safety of this bridge.

Project description

For the work to rehabilitate the existing bridge to address minor erosion behind wingwalls, installation of hazard markers at bridge corners, cleaning the deck, sealing the entire deck surface with high molecular weight methacrylate to protect girders from further salt damage and add RIP RAP along the south abutment. The bridge is in fair condition with a load rating due to extensive cracking and spalling of the deck and a girder. Improvements at the approaches to the bridge such as potholes and erosion need to be addressed.