Closures Continues at Appian Way and Cummings Skyway Overcrossings Above Interstate 80 in Contra Costa County

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.