Ongoing through late June 2025 – Weeknights: 9:00 PM to 6:00 AM
Contra Costa & Alameda Counties – Caltrans District 4 continues overnight maintenance and safety upgrades along Interstate 80 (I-80) between Pinole Valley Road in Pinole and State Route 4 (SR-4) in Hercules, conducting Median barrier repair and lighting installation. Work will continue 9PM- 6AM Monday through Friday, overnight only, with multiple lane closures in the eastbound and westbound I-80.
The highway will remain open throughout the project, with lane closures limited to overnight hours only.
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.
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