San Diego, Calif.
San Diego State University is working with the Metropolitan Transit Development Board (MTDB) to build an underground trolley station. A 5.9-mile extension tunnel from Mission Valley to La Mesa is included in the $435-million project, which is being funded by MTDB. The cost of the under-campus station and tunnel is $84.3 million. Developed by Clark Construction Group of Bethesda, the tunnel has been under construction since June of 2001 and is approximately halfway completed. Construction of the trolley station is ongoing.
