Highway 101 Will Close in North Santa Barbara County for One Night

Work to Rebuild SR 135 Interchange to Reroute Traffic

Map showing closures at Higway 101 and the State Route 135 overpass overnight February 13-14.

Sat Feb 11, 2023 | 10:51am

Travelers on the 101 through Los Alamos in northern Santa Barbara County will want to note a full highway closure planned for Monday night while work occurs on the State Route 135 overpass. On the southbound side, all lanes will be closed from 7 p.m. on February 13 through 6 a.m. on February 14. On the northbound side, the closure of all lanes runs from 8 p.m., February 13, until 6 a.m., February 14. 

Electronic message boards and detour signs will guide drivers off the highway — northbound at the Los Alamos/Vandenberg SFB sign; southbound at Los Alamos — and along the frontage roads back onto the highway.

Caltrans workers are reconstructing the bridge overpass at the 101 and SR 135, and the closure is stated to be for only one night. CalPortland Construction of Santa Maria is the contractor on the project, which costs $10 million, and should be finished in the spring.


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