Fiber Optic Infrastructure Installation Along I-80 In Contra Costa Solano and Alameda Counties

Full Closure of Eastbound I-80 San Pablo Dam Road on Ramp Monday, April 13, 2026 Additional closures along I-80, I-980 and I-580 connectors and lanes continue Sunday through Thursday, Nightly,10 PM -5 AM through May 2026

Contra Costa, Solano & Alameda Counties - Caltrans is announcing ongoing closures related to the Fiber Optic Infrastructure Project along both eastbound and westbound I-80, I-980 and I-580 in Contra Costa, Solano and Alameda Counties. The construction work, which focuses on installing new fiber optic infrastructure, will be conducted during overnight hours, specifically between 10 PM and 5 AM to minimize traffic disruption.

The project will move eastbound, starting at McDonald Avenue and progressing toward the Carquinez Bridge. A full closure is scheduled for Monday, April 13, 2026, and tentatively scheduled for Tuesday April 14, 2026. from 10 PM to 5 AM of the San Pablo Dam Road on ramp, with additional nightly closures to follow on I-80 and the I-980 to-I-580 interchange toward the connector between I-580 and I-80, throughout the duration of the project

What to Expect:

Scheduled Lane and Ramp Closures
Caltrans will implement nightly lane and ramp closures on eastbound Interstate 80 (EB I-80) between McDonald Avenue and the Carquinez Bridge. The next week's focus and lane # 4 and ramp closures will be between San Pablo Dam Road and Hilltop Drive. These closures are scheduled to occur Sunday through Thursday, from 10:00 PM to 5:00 AM throughout May 2026

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

EB San Pablo Dam Road Full on Ramp Closures
Monday, April 13, 2026, and tentative for Tuesday April 14, 2026, between 10:00 PM and 5:00 AM.

Hilltop Drive EB I-80 Loop on Ramp Closures 4/15 through 4/17 and 4/19 through 4/21

I-80 Fitzgerald Drive EB I-80 On-Ramp closures 4/16 and 4/19 through 4/24

During these closure periods, motorists are advised to follow posted detour routes.

This project is tentatively scheduled for completion by Winter 2028. 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.