From SFMTA:
Please join us to discuss the Mission Bay Loop Project.
In 2007, the San Francisco Municipal Transportation Agency (SFMTA) began the Third Street T-Line service between Embarcadero and Sunnydale. The Mission Bay Loop was designed as part of the Third Street Light Rail Project and an Environmental Impact Statement/Environmental Impact Report for the Third Street Light Rail Project was completed and approved in 1999 by the Federal Transit Administration (FTA). An updated Environmental Assessment for the loop was also approved by FTA in 2013. Upon completion of the Central Subway, the Mission Bay Loop will allow for more frequent service between the Central Waterfront, Mission Bay, SOMA and Chinatown by finishing the train turnaround at Third, 18th, 19th and Illinois Streets.