Interstate 880 Interchange Improvements (Winton Avenue/A Street)

The Alameda County Transportation Commission (Alameda CTC), in cooperation with the California Department of Transportation (Caltrans), will implement improvements at the Winton Avenue and A Street interchanges along the Interstate 880 (I-880) corridor.

Alameda CTC intends to initiate project scoping and environmental clearance for the interchanges concurrently to enable the project to pursue funding for subsequent phases as part of the project delivery. Project development for the subsequent phases and viable project phasing options will be determined based on the traffic analysis conducted during the environmental phase and potential future funding availability.

Proposed improvements include reconfiguring the I-880 interchange at Winton Avenue to provide direct access to the Southland Mall and implement Complete Streets features, and reconstructing the I-880/A Street interchange to widen A Street from five to six lanes and provide additional lane capacity for potential future freeway widening. Improvements will also involve modifying signals and reconfiguring intersections to improve truck turning maneuvers.

For total project cost and phase information, see the project Fact Sheets tab.
Please stay tuned for details on upcoming public meetings.
Please stay tuned for project informational resources.