Rain or other unforeseeable developments will reschedule
ALAMEDA AND CONTRA COSTA COUNTIES – Caltrans will be closing the right-most lane of southbound Interstate 680 at various locations and times between Alcosta Boulevard in San Ramon and State Route 84 in Sunol for tree removal May 29 through approximately late August 2023.
The closures will take place during the day between 11 a.m. and 7 p.m, with the first round of closures starting on May 29, 2023. The closures are currently scheduled to take place starting May 29; rain and other unforeseeable developments will cause the work to be rescheduled.
The closures are necessary in order to provide sufficient space for workers to safely remove trees and vegetation in advance of the construction of the southbound Interstate 680 express lane and pavement rehabilitation project.
That project involves building a new express lane on southbound I-680 that will stretch all the way from SR-84 to Alcosta Boulevard in San Ramon. The express lane will close the gap between existing and in-process express lanes to ease the commute for southbound I-680 commuters. It will also rehabilitate the pavement for a smoother ride.
The tree impacts will be addressed through a future landscape project currently in development. The landscape project will include scope to restore trees where feasible and address the loss of other vegetation resulting from the project’s impacts.
Caltrans is aware of the inconvenience and impacts the lane closures present to the traveling public and thanks the public for their patience as we work to improve travel on I-680. Every effort will be made to minimize impacts however, please expect temporary inconvenience, noise and dust during construction.
Signage and California Highway Patrol officers will be on hand to guide motorists. Please drive safely and slow for the Cone Zone for the safety of Caltrans workers and other motorists.
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