Overnight Lane Closures On Eastbound And Westbound Interstate 580 In Contra Costa County For Sign Installation

Schedule: Westbound closures Tuesday, December 2^nd and Eastbound closures Wednesday, December 3^rd 7 PM to 6 AM nightly

Contra Costa County — Caltrans District 4 will begin maintenance and safety upgrades along eastbound and westbound Interstate 580 (I-580) between Bayview Avenue and the Richmond–San Rafael Bridge Toll Plaza. Multiple lanes, including on and off ramps, will be closed on Tuesday, December 2^nd for westbound I-580 and Wednesday, December 3^rd for eastbound I-580 between 7:00 PM and 6:00 AM, both nights, for sign installation. This work marks the initial phase of the I-580 Richmond–San Rafael Bridge Corridor Enhancements Project. These upgrades will support improved traffic flow, enhanced safety, and more efficient toll operations along this vital Bay Area corridor.

Project enhancements include:

• Converting an existing general-purpose lane into a High-Occupancy Vehicle (HOV) lane
• Removing the existing toll booths and installing new toll gantries east of the current toll plaza
• Constructing a dedicated toll gantry and realigning the westbound Stenmark Drive on-ramp

For updates on the Richmond San Rafael Bridge Traffic Advisory Sign Up Form.

**All work is weather dependent and subject to change**

Changeable Message Signs (CMS) will provide advance notice for motorists traveling in the area. Drivers may experience minor delays and are advised to plan ahead and allow extra time. Be work zone alert, drive with caution through the work zone.

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.