CONTRA COSTA COUNTY — Caltrans has canceled the full closure of the Stone Valley Road on-ramp to southbound Interstate 680 (I-680) in Alamo that was previously scheduled for Friday, February 13, 2026.
Canceled Ramp Closure Details:
- Location: Stone Valley Road on-ramp to southbound I-680
- Date:
Friday, February 13, 2026— Canceled - Time: 10:00 AM to 6:00 PM
Contra Costa County — Caltrans will conduct a full closure of the Stone Valley Road on-ramp to southbound I-680 in Alamo, Thursday, February 12, 2026 and Friday, February 13, 2026 from 10AM-6PM, for soundwall upgrades.
**All work is weather dependent and subject to change**
Ramp Closure Information
- Location: Stone Valley Road on-ramp to southbound I-680
- Date: Thursday, February 12, 2026 and Friday, February 13, 2026
- Time: 10:00 AM to 6:00 PM
Detour Information
During the temporary closure of Stone Valley Road on-ramp:
- Left or Right Turn from Stone Valley Road to NB Danville Road
- Right Turn to EB Livorna
- Enter SB 680 On-Ramp
Changeable Message Signs (CMS) will provide advance notice for motorists traveling in the area. Be work zone alert, drive with caution through the work zone. For 24/7 traffic updates, follow 511.org on X. For real-time traffic, visit Caltrans QuickMap.
Caltrans appreciates the public’s patience during this essential safety work.
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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