Interstate 580 Bridge Rehabilitation Project

The Interstate 580 Bridge Rehabilitation Project, managed by Caltrans District 4 in the Bay Area/Oakland, involves critical infrastructure improvements in Alameda County. The scope of work focuses on replacing and upgrading non-standard bridge barrier railings to meet current safety standards across three undercrossing structures, while also providing seismic retrofitting for two of those structures. The project is specifically located on Interstate 580 from postmile R41.3 to 44.8. This project is currently listed as a forecast with a posted date of August 21, 2025, under NAICS code 237310. According to the Notice of Determination filed by the California Transportation Commission, the project was evaluated under CEQA and determined to have no significant environmental effect, resulting in a Negative Declaration and Addendum. No specific mitigation measures or monitoring plans have been adopted for the work.