A project to improve drainage along the Castillo Street undercrossing in Santa Barbara will result in the closure of the Highway 101 southbound Castillo Street off-ramp beginning Monday, March 31 and Tuesday, April 1 during the overnight hours between 9 p.m. and 6 a.m.

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 $500,000 project is Brough Construction of Arroyo Grande.

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.