Preliminary Construction Underway

While construction of the Mid-Coast Trolley extension project is expected to start in the second half of 2016, preliminary construction activities (largely to relocate overhead and underground utilities to make way for the construction of the trolley tracks and for the guideway on the aerial portion of the route) are already underway. Visit the Construction Notices tab to get the latest information on construction.  


The Mid-Coast Trolley will extend light rail service from the Santa Fe Depot in Downtown San Diego to the University City community, serving major activity centers such as Old Town, UC SanDiego, and Westfield UTC. Primary construction of the project is expected to begin in the second half of 2016, with service anticipated to begin in 2021.

Freeways and arterials in the Mid-Coast Corridor are generally congested and traffic congestion is projected to increase as the region grows. Population in the entire corridor is forecasted to increase 19 percent and employment is forecasted to increase 12 percent by the year 2030. The Mid-Coast Trolley extension will expand transportation capacity in the corridor to accommodate existing and future travel demand, particularly for peak period commute trips. The project will provide an effective alternative to congested freeways and roadways for travelers and will reduce vehicle miles traveled. 

The Trolley extension route begins just north of the Old Town Transit Center and travels in existing railroad right-of-way and alongside I-5 to Gilman Drive. It crosses to the west side of I-5 just south of Nobel Drive and continues on to serve the heart of the UCSD campus. It then crosses back to the east side of I-5 near Voigt Drive to serve the UCSD east campus and Scripps Memorial Hospital, transitions into the median of Genesee Avenue, and continues down Genesee Avenue to the Westfield UTC Transit Center. View map.

You also can view simulations of each station: Tecolote RoadClairemont DriveBalboa AvenueNobel Drive,VA Medical CenterPepper CanyonVoigt DriveExecutive Drive, and Westfield UTC Transit Center.

The project will connect corridor residents with other Trolley lines serving Mission Valley, East County, and South County. As an extension of the existing Metropolitan Transit System Trolley Blue Line, it will offer a one-seat (no transfer) ride from the international border and communities south of Downtown San Diego all the way to University City. This new service will enhance direct public access to other regional activity centers and improve travel options to employment, education, medical, and retail centers for corridor residents, commuters, and visitors.

View a "flyover" of the Mid-Coast Trolley route.

Stay Informed

To stay up-to-date on the Mid-Coast Trolley project, follow us on Twitter and like us on Facebooksign-up to receive our newsletter, or contact the project team with questions at or (877) 379-0110.