T Third Street

T Third Street
T Third Street
	Northbound T-Third train passing Mission Rock station, April 2018.
Overview
Owner	San Francisco Municipal Transportation Agency
Locale	San Francisco, California
Termini	West Portal; Sunnydale
Stations	30
Service
Type	Light rail
System	Muni Metro
Operator(s)	San Francisco Municipal Railway
Daily ridership	40,600 (2019; combined with K Ingleside)
History
Opened	January 13, 2007 (limited service); April 7, 2007 (full service)
Technical
Track gauge	4 ft 8 1⁄2 in (1,435 mm); (standard gauge)
Electrification	Overhead lines, 600 V DC
Route diagram
	Legend
	Muni Metro
	East Yard
	Levon Hagop Nishkian Bridge
	over Islais Creek
	Caltrain
	to San Jose
	This diagram: view; talk; edit;

The T Third Street is a Muni Metro line in San Francisco, California. It is the first new light rail line in San Francisco in more than half a century and the first fully accessible line in the system.

Route description[change | change source]

The destination sign of an inbound Muni Metro K train changed from K Ingleside to T Third Street at West Portal Station.

Testing on the line took place in summer 2006,^[3] with limited service starting on January 13, 2007, and full service beginning on April 7, 2007.^[4] It runs along the newly constructed light-rail tracks on Third Street and Bayshore Boulevard in the Visitacion Valley, Bayview/Hunters Point, Dogpatch, and Mission Bay neighborhoods, connecting to the existing Muni Metro system along the Embarcadero and under Market Street.

In the future, the line may be going to Caltrain's Bayshore Station (to which it was originally planned to run) and, in the other direction, to San Francisco's Washington Square in North Beach through Chinatown Central Subway route.

Operation[change | change source]

The T Third operates seven days a week, beginning at 5 a.m. on weekdays, and 6 a.m. Saturdays and 8 a.m. Sundays, operating until 1 a.m.

History[change | change source]

Following service changes on June 30, 2007, the K Ingleside and the T Third Street lines were combined inside the Market Street subway tunnel.^[5] Though keeping their line designations, resulting in an upside-down, horseshoe-shaped route from Balboa Park to Bayshore and Sunnydale. At West Portal Station, inbound K trains heading towards downtown change their signs to the T line; at Embarcadero Station, T trains heading into downtown change signs to the K line.

The underground section of the line was closed west of Castro station from June 25 to August 24, 2018, due to the Twin Peaks Tunnel shutdown.^[6] On August 25, 2018, at the end of the shutdown, Muni began running two-car trains on the K/T line.^[7]

Central Subway[change | change source]

Service on the Central Subway was initiated on November 19, 2022, with shuttle trains serving the four new stations.^[8] The T-Third will reroute north of the 4th and King Station starting on January 7, 2023. This change will disconnect the T from the K line, avoiding both King Street and the Market Street subway.^[9]

References[change | change source]

↑ "Short Range Transit Plan: Fiscal Year 2019 - Fiscal Year 2030" (PDF). San Francisco Municipal Transportation Agency. December 2019. p. 47.
↑ "2007 Annual Report" (PDF). San Francisco County Transportation Authority. p. 16. Archived from the original (PDF) on 2020-02-27. Retrieved 2022-02-03.
↑ Gordon, Rachel (July 26, 2006). "Third Street seeing streetcars / Test runs for light-rail project begin at last". San Francisco Chronicle. Retrieved 2013-12-15.
↑ Cabanatuan, Michael (January 12, 2007). "T-Third Muni line starts service Saturday". San Francisco Chronicle. Retrieved 2013-12-15.
↑ Gordon, Rachel (June 4, 2007). "T-Third line causing delays, so officials consider new routes". San Francisco Chronicle. Retrieved 2013-12-15.
↑ "Twin Peaks Tunnel Improvements". San Francisco Municipal Transportation Agency. June 25, 2018. Archived from the original on June 26, 2018.
↑ von Krogh, Bonnie Jean (August 24, 2018). "Two-Car Trains Now Permanent on K/T Line" (Press release). San Francisco Municipal Transportation Agency.
↑ "Starting Tomorrow! Central Subway Special Service Opens". San Francisco Municipal Transportation Agency. November 18, 2022.
↑ "New T Third Route in Central Subway Starting January 7". San Francisco Municipal Transportation Agency. December 15, 2022.

Other websites[change | change source]

Media related to T Third Street at Wikimedia Commons

SFMTA - K Ingleside/T Third Street Archived 2020-02-28 at the Wayback Machine

[srtp-1] "Short Range Transit Plan: Fiscal Year 2019 - Fiscal Year 2030" (PDF). San Francisco Municipal Transportation Agency. December 2019. p. 47.

[2] "2007 Annual Report" (PDF). San Francisco County Transportation Authority. p. 16. Archived from the original (PDF) on 2020-02-27. Retrieved 2022-02-03.

[3] Gordon, Rachel (July 26, 2006). "Third Street seeing streetcars / Test runs for light-rail project begin at last". San Francisco Chronicle. Retrieved 2013-12-15.

[4] Cabanatuan, Michael (January 12, 2007). "T-Third Muni line starts service Saturday". San Francisco Chronicle. Retrieved 2013-12-15.

[5] Gordon, Rachel (June 4, 2007). "T-Third line causing delays, so officials consider new routes". San Francisco Chronicle. Retrieved 2013-12-15.

[tpt-6] "Twin Peaks Tunnel Improvements". San Francisco Municipal Transportation Agency. June 25, 2018. Archived from the original on June 26, 2018.

[7] von Krogh, Bonnie Jean (August 24, 2018). "Two-Car Trains Now Permanent on K/T Line" (Press release). San Francisco Municipal Transportation Agency.

[8] "Starting Tomorrow! Central Subway Special Service Opens". San Francisco Municipal Transportation Agency. November 18, 2022.

[9] "New T Third Route in Central Subway Starting January 7". San Francisco Municipal Transportation Agency. December 15, 2022.

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