The gas flow to a line that broke in San Bruno Sunday evening was capped by Monday morning and trains were running on time.
That's after a 2-inch gas line was broken around 8:18 p.m. by construction workers near San Bruno Avenue, PG&E spokesman J.D. Guidi said.
Workers capped the gas flow to the line around 11 p.m., but there is no estimate yet on how long permanent repairs will take once that occurs, Guidi said.
The gas leak has halted Caltrain in both directions, according to Caltrain spokeswoman Christine Dunn.
Northbound train 447 was stopped at Millbrae, and all passengers have transferred to BART. Southbound train 448 stopped at South San Francisco, and those passengers have been taken by bus to Millbrae, where they can board a southbound train, Dunn said.
BART accepted Caltrain tickets and SamTrans provided a bus bridge between Millbrae, San Bruno and South San Francisco.
The line was broken by a construction crew working on the San Bruno Grade Separation Project, Dunn said.
The construction is part of a $155 million project that will elevate train tracks over three streets in San Bruno. San Bruno Avenue has been closed since Friday at 5 p.m. and is scheduled to remain closed until 5 a.m. Monday due to the project.
No injuries or evacuations have been reported.