Train track work to run all night

SOUTHWEST CORRIDOR—They’ll be working on the railroad all the live-long day—and all night, too.

The track replacement work on the Southwest Corridor—which begins tomorrow and will last three months—will run 24 hours a day on weekends and between 11 p.m. and 5 a.m. on weekdays, according to Massachusetts Bay Commuter Railroad spokesperson Tom Halkin.

As the Gazette previously reported, giant machines will replace three lines of track used by commuter rail and Amtrak between Back Bay and Forest Hills Stations. The work is likely to be noisy, but not “prolonged,” Amtrak previously told the Gazette.

Commuter rail service delays are expected. The MBTA’s Orange Line, which also runs in the Southwest Corridor, will not be affected.

The work will replace concrete railroad ties that Amtrak alleges are faulty.