US 101 Southbound Castillo Street Ramp Closures/Castillo Street Traffic Control In Santa Barbara For Drainage Improvement Project

On Behalf of Caltrans District: 05 – Santa Barbara, San Luis Obispo, Monterey, San Benito, and Santa Cruz Counties

Friday, March 28, 2025

SANTA BARBARA COUNTY – A project to improve drainage along the Castillo Street Undercrossing will result in the closure of the US 101 southbound Castillo Street off-ramp beginning Monday, March 31 and Tuesday, April 1 during the overnight hours between 9 pm and 6 am. This work may occur during the same time frame on Wednesday, April 2, if necessary.

This work will also result in one-way reversing traffic control on Castillo Street, just north of the Castillo Street Undercrossing to allow for a paving operation.

Flaggers and message signs will assist with traffic control in this work zone. Travelers can expect minor delays.

The contractor for this ongoing $500,00 project is Brough Construction of Arroyo Grande, CA.

Road information and updates can also be found on Caltrans District 5 Social Media platforms: Twitter at: @CaltransD5, Facebook at: Caltrans Central Coast (District 5) and Instagram at: @Caltrans_D5.

Our crews deserve to get home safely too.
Drive slowly and carefully in work zones.

CHP Traffic Incident Information Page: http://cad.chp.ca.gov
Traveler information at: https://quickmap.dot.ca.gov/

To reach the Caltrans District 5 reception desk by phone, call (805) 568-0858.