DATE: July 22, 2020
TO: Council Infrastructure Committee
FROM: Director of Public Works
SUBJECT
Title
Receive Update on the I-880/Winton Avenue/A Street Interchange Project
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RECOMMENDATION
Recommendation
That the Council Infrastructure Committee (CIC) reviews this report and receives a project update on the conceptual project alternatives and technical studies.
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SUMMARY
The Winton Avenue and A Street interchanges along the Interstate 880 (I-880) corridor were constructed in 1968 and 1952 respectively and have seen no significant operational and multi-modal access improvements over the years. Since their construction, the City experienced significant growth, and as a result, both interchanges experience traffic operational issues and access issues. In addition, the lack of auxiliary lanes between the closely spaced Winton Avenue and A Street interchanges along I-880, result in mainline back- up due to merge/weave issues. The lack of complete street features across I-880, on both streets, creates a barrier for the safe movement of cyclists and pedestrians.
The City, in partnership with the Alameda County Transportation Commission (ACTC), who is the implementing agency, and Caltrans who owns and operates I-880, propose to provide interchange improvements at the Winton Avenue and A Street interchanges along the I-880 corridor. The I-880 Interchange Improvements (Winton Avenue and A Street) Project (Project) would include:
• Reconfiguring the I-880 interchanges at Winton Avenue and A Street to enhance access to the surrounding residential, retail, and commercial land uses
• Improving pedestrian and bicycle facilities at both interchanges
• Providing northbound and southbound auxiliary lanes along the main line between the A Street interchange and the Winton Avenue interchange
• Providing new signalized intersections at Winton Avenue ramp terminals and modifying ramp terminal intersections at A Street to improve traffic flow, reduce congestion, and make intersections accessible and safer for pedestrians and cyclists
ATTACHMENTS
Attachment I Staff Report
Attachment II Project Fact Sheet and Alternatives