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Daytime Full Closure Of El Cerro Boulevard On-Ramp To Southbound I-680 In Danville

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Schedule: Tuesday, February 10, 2026, 9:00 AM-3:00 PM.

Contra Costa County — Caltrans will conduct a full closure of the El Cerro Boulevard on-ramp to southbound I-680 in the Town of Danville, Tuesday, February 10, 2026, from 9AM-3PM. For the safety of our crews and the motoring public.

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

Ramp Closure Information

  • Location: El Cerro Boulevard on-ramp to southbound I-680
  • Date: Tuesday, February 10, 2026
  • Time: 7:00 AM to 3:00 PM

Detour Information
During the temporary closure of the El Cerro Boulevard on-ramp:

  • Motorists traveling to southbound I-680 should use alternate nearby on-ramps, including Stone Valley Road or Sycamore Valley Road, as appropriate.

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 Twitter. For real-time traffic, visit Caltrans QuickMap.

Caltrans appreciates the public’s patience during this essential safety work.

DETOUR TO SB I-680 FROM EB EL CERRO BLVD.

Detour map for full closure on I-680 from Eastbound El Cerro Blvd. on ramp. From Eastbound El Cerro Blvd. Continue EB underneath I-680, left on NB I-680 on ramp, exit Stone Valley Rd (Exit 42B), left on Stone Valley Rd. then left ton SB I-680 On ramp.

DETOUR TO SB I-680 FROM WB EL CERRO BLVD.

Detour map for full closure on I-680 from Westbound El Cerro Blvd. on ramp. From Westbound El Cerro Blvd. Continue WB towards I-680, right on NB I-680 on ramp, exit Stone Valley Rd (Exit 42B), left on Stone Valley Rd. then left ton SB I-680 On ramp.

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.