12th & Imperial Transit Center

12th & Imperial Transit Center is a San Diego Trolley station in downtown San Diego, California. It is located in the East Village neighborhood of the city and serves the high-density residential developments that surround the stop. It is one of two stations from which Petco Park can be reached (the other being Gaslamp Quarter station). The station has historically been used as a major transfer point between the various Trolley lines and is the only station that is directly served by all four Trolley lines.

San Diego Trolley
The Blue Line and the Orange Line are served by the station's island transfer platforms, and the two lines split just south of this station to serve South Bay and East County, respectively. To the north, both lines run parallel to each other through downtown on Park Boulevard and turn west at City College to run along C Street towards UTC Transit Center and Courthouse station, respectively. The Silver Line uses the platform directly adjacent to the 1255 Imperial Avenue building, as the start of its clockwise circular route around downtown San Diego.

The Bayside Terminal platform of the 12th & Imperial station marks the western terminus of the Green Line, which, upon departing from the station, goes through the Gaslamp Quarter, Convention Center and Seaport Village stations to the Santa Fe Depot, then on to the Old Town Transit Center and its destination at Santee Town Center station.

This station was renovated in two stages during the Trolley Renewal Project: in summer 2011 for the Bayside Terminal platform, and from late October 2012 until June 2013 for the main station platforms.

Prior to September 2, 2012, Orange Line trolleys used to loop around downtown San Diego to terminate at the Bayside Terminal platform of this station until a system redesign rerouted the western terminus of the line to Santa Fe Depot and extended the Green Line's terminus from Old Town Transit Center to the Bayside Terminal.

Bus service
San Diego MTS bus routes, , , and also stop at the 12th & Imperial Transit Center. The bus bays are located to the east of the northbound Blue/Orange line transfer platform, on the west side of National Avenue.

Location
The 12th & Imperial Transit Center is built into the James R. Mills Building, a 10-story office tower that houses the headquarters of the San Diego Metropolitan Transit System and is located directly adjacent to the San Diego Trolley maintenance yard.

It is also located approximately two blocks east of Petco Park and just south of the San Diego Central Library that opened in 2013.