Roadwork is set to begin tonight and continue nightly through Friday on Highway 101. Work crews will be busy from 9 p.m. to 6 a.m at these locations:

Broadway 8 Southbound; full on- and off-ramp closure. 0- to 5-minute delay.

Donovan Road 8 Both directions Full on-ramp closure. 0- to 5-minute delay.

Main Street 8 Both directions. Full on-ramp closure. 0- to 5-minute delay.

Stowell Road 8 Both directions. Full on-ramp closure. 0- to 5-minute delay.

Betteravia Road 8 Both directions. Full on-ramp closure. 0- to 5-minute delay.

Stanta Maria Way. Northbound. Full on- and off-ramp closure. 0- to 5-minute delay.

Santa Maria Way to San Luis Obispo County line. Both directions. No. 1 and 2 of 2 two lanes. 0- to 5-minute delay.

Two miles east of Gifford Crekk Bridge to five miles east of Gifford Creek Bridge. Both Directions. One-way traffic control. 0- to 20-minute delay.

One mile east Tepusquet Road to Cuyama River Bridge. Both directions. One-way traffic control. 0- to 20-minute delay.