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

Full Closure along Eastbound I-80 on and off Ramps resumes Monday, April 6, 2026
Additional closures along I-80, I-980 and I-580 connectors continue Sunday through Thursday, Nightly,9 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 9 PM and 5 AM to minimize traffic disruption.

The project will progress east from McDonald Avenue toward Carquinez Bridge. Full closures of ramps and lanes are planned from Monday, April 6, 2026, to Thursday, April 9, 2026, between 9 PM and 5 AM, affecting San Pablo Avenue ramps, San Pablo Dam Road ramp, Hilltop Road on ramp loop, Richmond Parkway ramps, and Fitzgerald Drive ramp. Additional nightly closures will occur near Appian Way, Carquinez Bridge, West MacArthur to I-80, and the I-980/I-580 interchange throughout the project.

What to Expect:

Scheduled Lane and Ramp Closures

• Caltrans will implement nightly lane and on and off ramp closures along eastbound Interstate 80 (EB I-80) between McDonald Avenue and Carquinez Bridge. These closures are scheduled to occur Sunday through Thursday, from 9:00 PM to 5:00 AM throughout May 2026. During the closure period, motorists are advised to follow posted detour routes. All work is weather permitting.

Closure Schedule: (Subject to change or extended) April 6th-April 9th

San Pablo Ave Ramp- EB I-80 on and off Ramp

• 10:00 PM - 5:00 AM
• Monday, April 6, 2026, and (Tentative) Tuesday, April 7, 2026

San Pablo Dam Road - EB I-80 On-Ramp

• 10:00 PM - 5:00 AM
• (Tentative) Tuesday, April 7, 2026, and Wednesday, April 8, 2026

Hilltop Drive - EB I-80 Loop On-Ramp

• 9:00 PM - 5:00 AM
• (Tentative) Tuesday April 7, 2026, and Wednesday April 8, 2026

Fitzgerald Drive - EB I-80 On-Ramp & Off-Ramp (Full Closures)

• 9:00 PM - 5:00 AM
• Wednesday April 8, 2026, and Thursday 9, 2026

Richmond Parkway - EB I-80 Loop On-Ramp

• 10:00 PM - 5:00 AM
• Wednesday April 8, 2026, and Thursday 9, 2026

Please note that some off ramps will be closed during these operations. Motorists are advised to use the prior exit to reach their destinations and avoid delays.

Caltrans thanks the public for its patience and encourages motorists to stay informed by using Quickmap.dot.ca.gov to plan your route before you head out, reduce speeds in work zones, and allow extra travel time.

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

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, follow 511.org on Twitter. For real-time traffic, visit Caltrans QuickMap.

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