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Reminder: Interstate 5 Closures This Sunday Night

June 1, 2018-- Starting Sunday, June 3, from 9:30 p.m. to Monday, June 4, at 5 a.m., all southbound lanes on Interstate 5 in the University City and La Jolla areas will be shut down while construction crews build a column for the Mid-Coast Trolley project in the center divider.

Motorists heading southbound on Interstate 5 will be detoured via Interstate 805 during the overnight closures.

Entrances onto I-5 from Genesee Avenue, La Jolla Village Drive, and Nobel Drive will be closed. Motorists are advised to seek alternative routes.

The closure will allow crews to construct a support column in the center divider just south of Nobel Drive for the future Trolley bridge that will span over I-5. 

Heavy equipment and machinery will be moved across the freeway during the closures. Crews have begun drilling the 8.5-foot diameter hole in the center divider. Large cranes will be positioned on site to hoist a 155-foot-long rebar cage from the freeway and settle it into the bored hole. Once the cage is settled into the hole, more than 30 concrete trucks will be staged along the freeway to place the concrete for the column.

Traffic controls and detour signs are in place to alert motorists of the upcoming closures.  

The Mid-Coast Trolley project will extend Blue Line Trolley service 11 miles north from the Old Town Transit Center to the University City community, serving major activity centers such as Mission Bay Park, the VA Medical Center, UC San Diego, and Westfield University Town Center mall.

Mid-Coast Trolley construction began in fall 2016 and service is anticipated to begin in fall 2021.  The current budget is $2.1 billion, which includes financing costs. The project is funded through the Transnet half-cent sales tax and the Federal Transit Administration.

Project Manager(s)

For media inquiries, please contact the SANDAG Public Information Office at (619) 699-1950 or