San Luis Obispo, CA -- The northbound lanes on Highway 101 near the Highway 41 interchange will close tonight and tomorrow night from 10 o’clock until to 5 the following morning. Caltrans will be replacing a concrete slab.

Motorists headed northbound can exit Highway 101 at Highway 41 before continuing to the northbound on-ramp at Rosario Avenue. Detour signs will be onsite to help direct drivers. Expect up to 10 minute delays.