SF T Third Line Back on Track After Brief Delay
San Francisco's T Third light rail line resumed service after disruption at 4th and Berry
T Third Resumes Service After 4th Street Delay
San Francisco's T Third Street light rail line returned to normal operations Friday after a disruption at 4th and Berry streets, transit officials said. The San Francisco Municipal Transportation Agency confirmed both northbound and southbound service resumed on January 3, though riders may experience residual delays. The cause of the disruption wasn't immediately disclosed.
The T Third Street line serves southeastern San Francisco neighborhoods, running approximately 4.9 miles from Sunnydale to the Embarcadero, according to SFMTA route information. The line opened in 2007 as the city's first new light rail route in decades, connecting residential areas to downtown employment centers. Officials didn't specify how long the disruption lasted or how many passengers were affected.
The disruption occurred at 4th and Berry streets, a key junction in the South of Market neighborhood where the T Third line operates in mixed traffic. Jeffrey Tumlin, Director of Transportation for SFMTA, oversees operations for the city's light rail network. The agency announced the service restoration via social media channels, which transit systems typically use for real-time operational updates. The extent of passenger impact wasn't specified by officials.
Service returned to normal on January 3, 2026, officials confirmed, though specific times for when the disruption began and when full service resumed weren't available. Transit agencies typically need additional time after clearing an incident for schedules to stabilize. Officials said operations were returning to regular timing but didn't provide a specific timeline for when residual delays would fully clear.
Riders on the T Third line should expect normal service with possible minor delays as operations stabilize, officials said. The agency advised passengers to check for updates before traveling. Moovit provides real-time service information for San Francisco's light rail network, including the T Third Street line.
