UCSF Mission Bay Platform Project

The SFMTA is replacing the existing UCSF Mission Bay platforms along 3rd Street between South and 16th streets. This new, larger center platform will service inbound and outbound trains and greatly expand transit capacity in preparation for neighborhood growth and the new Chase Center. The two existing platforms, which are split as separate inbound and outbound, will be demolished as part of the project. The new and improved platform’s greater size will enable four, two-car trains to load simultaneously during larger events. When needed, the platform will also allow for trains to depart inbound from both sides of the platform to connect customers quickly to BART, CalTrain and eventually the Central Subway.

Construction elements included in the project:

• Remove the two existing platforms at 3rd and South streets

• Build a new center island platform

• Widen the track to accommodate the new island platform

• Install new overhead wires that power trains

• Update utility lines and street lights to support the new center island platform

• Upgrade the traffic signals at 3rd and South streets as well as 3rd Street and Campus lane

The UCSF Mission Bay Platform will be closed November 12, 2018 through late April 2019. Please use Mission Rock and Mariposa stations as an alternative while the T Third train is in service.

To accommodate construction work on the platform and train tracks, the T Third will be bus substituted on the following dates: November 25; from November 30 to December 3; and from January 4 to late February.

T Third Bus Substitution

T Third line will be served by buses from Embarcadero to the terminal at Bayshore Blvd. and Sunnydale Ave. Sunday, November 25, the weekend of November 30 to December 3, and Friday, January 4 through late February (see schedule below). All Muni train stations between Embarcadero to the terminal at Bayshore Blvd. and Sunnydale Ave. will be closed and buses will service all stops curbside along 3rd Street. Look for signs indicating where to board.

During these bus substitutions, those traveling underground on Muni Metro towards Bayshore Blvd. and Sunnydale Ave. will transfer to a T Third bus at Embarcadero. Please watch for signs that will direct you to T Third bus.

Bus Substitution T Third

For more information and to sign up for alerts, visit our project page.