Starting Friday Night, August 8 to Monday Morning, August 11
Bridge Rehabilitation Project
Alameda County – Caltrans has scheduled work on northbound Interstate 680 (I-680) at the Mission San Jose (SR-238) Separation/Overpass in Fremont the weekend of August 8, 2025.
On Friday, August 8, lane closures are scheduled to begin at 8:00 PM with the full closure and work scheduled to begin at 10:00 PM and be completed by Monday, August 11 at 5:00 AM. This closure is necessary to perform critical bridge and pavement repairs.
These 55-hour closures are necessary to safely and efficiently complete key construction activities, including full bridge deck resurfacing and approach slab repairs. This phase of work involves heavy machinery and the resurfacing of the entire bridge deck. This work must be performed without live traffic to ensure worker and motorists safety. Concentrating these operations during weekend closures will help reduce the overall duration and impact of the project.
During these weekend closures, only one direction of travel on I-680 will be closed at a time with detours set in place. Motorists are encouraged to plan ahead and use alternative routes.
Weeknight work is already underway in preparation for these closures. Additionally, after the major bridge and overlay work is completed, additional work will continue during nighttime closures through Spring 2026, including pavement striping, barrier installation, and other finishing elements. Please note all work is weather dependent and scheduling dependent.
Caltrans thanks the public for their patience and cooperation as we continue to improve California's transportation network
NORTHBOUND I-680 FULL HIGHWAY CLOSURE ON THE WEEKEND OF AUGUST 8, 2025:
Full closure on NB I-680 is scheduled on the weekend of July 18, 2025. A segment of NB I-680 will be closed and traffic will be detoured through the Mission Blvd/SR-238 Off Ramp towards Eastbound SR-84. Closures will start Friday August 8 at 10:00 PM and conclude on the following Monday August 11 at 5:00 AM.
NB Local I-680 DETOUR:
Motorists traveling northbound on I-680 will need to exit right onto Mission Blvd/SR-238 Off-Ramp; Left towards NB Mission Blvd/SR-238; Continue on Mission Blvd/SR-238; Make a right onto Niles Canyon Rd (SR-84) and continue; Right onto NB I-680/SR-84 On-Ramp; Merge and continue onto NB I-680 towards Sacramento.
If you have a question or want to share a concern about the project, please call the
Project Hotline (510) 286-0319
Project Website: https://dot.ca.gov/680DeckRehab
Media Resource Page: I-680 and SR-238 Separation Bridge Rehabilitation Project Media Resources | Caltrans
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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Northbound Regional Detour
Northbound Local Detour
