The Green Line is the third line in the San Diego Trolley system, with service beginning on July 10, 2005 along with the completion and opening of the 5.9 miles (9.5 km)[1] Mission Valley East extension.[9]
During a system redesign which took effect on September 2, 2012, as part of the Trolley Renewal Project, the western portion of the Green Line was extended from Old Town south through downtown and along the Bayside Line, terminating at 12th & Imperial Transit Center's Bayside Platform.[7][10] This redesign allowed for two "universal" transfer points among all three core lines: the 12th & Imperial Transit Center and Santa Fe Depot Transit Center (which consists of Santa Fe Depot, America Plaza, and Courthouse stations, as well as the Santa Fe Depot/America Plaza Rapid terminal).[10]
In May 2024, MTS announced that a new service, known as the East County Connector (and later the Copper Line), would replace the Green and Orange lines between El Cajon Transit Center and the eastern terminus at Santee. The proposal was prompted by service issues caused by the merge of the double track to a single track between the final two stations, creating delays for Green Line trolleys waiting for the track to clear. On September 29, 2024, Green and Orange Line service was cut back to El Cajon Transit Center, and service on the Copper Line began.[11]
The Green Line's SDSU Transit Center is the only underground station in the entire trolley network.
Naming rights
In October 2017, Sycuan Casino managed to secure the naming rights for the Green Line when the MTS had sought out to sell out the naming rights for each line in the trolley system. The line was then named the Sycuan Green Line.[12] However, this is no longer the case.[citation needed] The Green Line is home to a paid station naming sponsorship, with the former Alvarado Medical Center station being known as UC San Diego Health East station.
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