MBTA officials say delays will persist on the Red Line through the weekend due to signal problems caused by the smoky three-alarm fire Thursday night that caused minor injuries to at least 20 people.
Repairs to the signal system, which currently doesn't work between South Station and Park Street, will be undertaken over the weekend and may even require a shutdown of service. But the authority hopes to have things back to normal by the Monday morning rush hour, MBTA General Manager Richard Davey said.
The fire happened just before 10 p.m. in a Red Line tunnel just north of the Downtown Crossing station, shutting down segments of the Green, Red, and Orange lines.
MBTA officials said a full investigation was underway of the fire, which was caused by a problem in the electrical system. They said a consultant has been studying the system since a previous incident in September.
The MBTA already plans to spend $200 million in the next five years on the electrical system, including $37 million in the next fiscal year upgrading outdated cables and breakers along the Orange and Red lines, including the area where last night's fire occurred, authority spokesman Joe Pesaturo said in a statement.
The MBTA is also working on a project that will shorten power feeds on the Red Line. The project will ensure that future power shutdowns result in fewer stations being closed, Pesaturo said.
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