I-80 Ramp Closures in Berkeley
Gilman Street Interchange Improvement Project
ALAMEDA COUNTY – Caltrans is scheduled to begin construction in May 2021 on the Gilman Interchange Improvement Project at the Interstate 80 Gilman Street exit in Berkeley. The project will enhance safety for pedestrians, cyclists and motorists through new features including a bicycle/pedestrian overcrossing and two roundabouts.
The $75 million project will enhance safety at the interchange by replacing unprotected left turns and turning conflicts with a double roundabout. It will also close the gap in the Bay Trail at the west end of Gilman Street and create a dedicated bike lane from the west end to Fourth Street.
Construction will take place in two phases. The first phase, constructing a bicycle/pedestrian overcrossing south of Gilman Street similar to the crossing over I-80 at University Avenue, begins in May 2021. It will involve ramp closures on I-80, street closures and brief overnight closures of I-80 in one direction at a time. Work on this phase is expected to conclude in 2023.
The second phase, building the double roundabout, is scheduled to begin in November 2021 and complete in 2023, weather permitting. Sporadic closures of Gilman Street, local streets and freeway ramps will be necessary to accommodate the work; there will be no freeway closures during this phase.
Every effort will be made to minimize disruption to local businesses, residents, motorists, cyclists and pedestrians. Changeable message signs, detours and public outreach will be in effect. California Highway Patrol officers will be onsite during ramp and freeway closures to guide motorists.
For more information about the project, visit the Caltrans I-80 Gilman Improvement website at https://dot.ca.gov/caltrans-near-me/district-4/d4-projects/d4-alameda-80-gilman-interchange-improvement-project or our partner Alameda County Transportation Commission website at https://www.alamedactc.org/programs-projects/highway-improvement/i80gilman/. Information about closures and work impacting the public will also be available via the project hotline at (510) 286-6080 once construction gets underway.
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBAY. For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/.