State transportation officials say a Los Angeles-area freeway tunnel will be closed for about a month on weekdays as crews make improvements.

The California Department of Transportation says starting Monday the westbound Interstate 210 connector in Pasadena will shut down from 11 a.m. to 7 p.m.

Commuters who use the Del Mar Boulevard and California Boulevard exits are urged to seek alternate routes and expect delays.

Crews will install permanent lighting as part of a $149 million project for a 10-mile stretch of the freeway north of downtown Los Angeles.