Contra Costa County & Marin County — Caltrans will end lane closures on the Richmond-San Rafael Bridge (I-580) for maintenance tied to the substation project. The last closure is scheduled for Friday, May 1, 2026; all field work is paused due to coordination and delivery issues and is expected to restart tentatively on November 1, 2026.
Closure Details:
- Eastbound I-580: Right shoulder closed during daytime, 5:00 AM - 2:00 PM.
Continues: Thursday, April 30, 2026
Ends: Friday, May 1, 2026
Resumes: Tentatively November 1,2026
Traffic Control Measures:
Changeable Message Signs (CMS) will alert drivers of closure.
Motorists should expect minor delays, reduce speed, and plan extra travel time.
Please use caution and be prepared for merging traffic near work zones.
For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.
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