LA JOLLA–Beginning Thursday at 9:30 p.m., and running through  April 12, at 5 a.m., all southbound lanes on Interstate 5 will be closed to vehicular traffic from the interchange of I-5 and Interstate 805 (I-805) to La Jolla Village Drive.

Two northbound lanes will also be closed from La Jolla Village Drive to Genesee Avenue.

During the overnight closure, crews will pour concrete to build the bridge deck for the Trolley overpass spanning I-5 at Voigt Drive.

Motorists should plan to take alternate routes to avoid congestion. Southbound travel will be detoured via I-805 and State Route 52. A map of the construction and detour route, as well as additional information on the closure and work being performed, is available atKeepSanDiegoMoving.com/MidCoastNotices.

The Mid-Coast Trolley Project will extend Blue Line Trolley service from Old Town north to the University City community, serving major activity centers such as Mission Bay Park, the VA Medical Center, UC San Diego, and University Town Center. Nine new stations will be constructed. Major construction work began in 2016, with service anticipated to begin in late 2021.