Caltrans Announces Hwy 12 Full Closures, Lane Closures This Weekend

SONOMA COUNTY, CA — As part of a pavement and concrete slab replacement project, Caltrans has scheduled nightly full highway closures this weekend, as well as daytime weekend lane closures on eastbound state Highway 12 in Santa Rosa.

The project is on eastbound SR-12 between Merced Avenue and Dutton Avenue.

Highway 12 Full Closures: Three Weekend Nights

Overnight full highway closures on eastbound SR-12 are scheduled from 8 p.m. Friday, Oct. 20 until 8 a.m. Saturday, Oct. 21.

A second weekend night of full highway closure on eastbound SR-12 is scheduled from 8 p.m. Saturday, Oct. 21 to 8 a.m. Sunday, Oct. 22.

A third weekend night of full highway closure on eastbound SR-12 is scheduled at 8 p.m. Sunday, Oct. 22 until 5 a.m. Monday, Oct. 23.

Highway 12 Lane Closures: Two Weekend Days

Daytime weekend lane closures will be in effect from 8 a.m. until 8 p.m. Saturday, Oct. 21 on eastbound SR-12 from Merced Avenue to Dutton Avenue in Santa Rosa, and again from 8 a.m. to 8 p.m., Sunday, Oct. 22, on eastbound SR-12 from Merced Avenue to Dutton Avenue in Santa Rosa.

During daytime shifts, one of the two traffic lanes on eastbound SR-12 is closed. Motorists traveling on eastbound SR-12 between Merced Avenue and Dutton Avenue should prepare for significant delays or choose an alternate route.

The weekend closures are necessary for worker and public safety and allow Caltrans to accelerate the demolition and reconstruction of concrete pavement slabs, which would take weeks or months to complete during typical overnight closures.

The slab replacement is part of a larger project to rehabilitate a three-mile stretch of SR-12 between Llano Road and Farmers Lane in Santa Rosa, which began in June 2023.