Contra Costa County — Caltrans will continue construction activities at the Appian Way and Cummings Skyway overcrossings above (I-80), requiring temporary daytime, nighttime and weekend lanes and ramp closures.
Closure Schedule & Details
Cummings Skyway Off-Ramp Closures (Eastbound I-80):
- Dates: Continues through June 19, 2026
- Time: 10:00 AM – 3:00 PM
- Work: Island reconstruction
- Impact: Daytime closure of the eastbound I-80 off-ramp at Cummings Skyway
Appian Way Overcrossing Overnight One Lane Closures (Southbound):
- Dates: June 22 – June 26, 2026 & June 29 – July 3, 2026
- Time: 7:00 PM – 5:00 AM (nightly)
- Work: Asbestos removal
- Impact: One lane closed on southbound Appian Way overcrossing near I-80.
Extended Weekend One Lane Closure – Appian Way Overcrossing (Southbound):
- Dates: Friday, June 26 – Monday June 28, 2026
- Time: 7:00 PM (Friday) – 7:00 AM (Monday)
- Work: Approach slab reconstruction
- Impact: Continuous one lane closed on southbound Appian Way overcrossing near I 80.
Additional Information
- No mainline lane closures on I-80 are planned until after the July 4th holiday weekend
- All work is weather-dependent and subject to change
To view more D4 Projects, visit: Caltrans D4 Traffic Advisory Publications.
To search for current District 4 lane closure information, please click here.
Thank you for your patience as we work to maintain our state’s highways, bridges, and tunnels.
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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