A project to build a concrete median barrier, install rumble strips and widen the shoulders of Highway 101 from Clark Avenue to Santa Maria Way will begin Friday.

There will be lane closures Monday through Thursday from 9 p.m. to 6 a.m. and from 8:30 a.m. to 2:30 p.m. Lane closures also have been scheduled from 11:45 p.m. Thursdays to 6 a.m. Fridays.

Motorists should expect delays of up to five minutes.

The contractor for the $1.2 million project is Granite Construction of Santa Maria. It is expected to be completed by September.

Click here for traffic updates on other state highway projects in Santa Barbara County.

— Jim Shivers is a public information officer for Caltrans District 5.