Following an extensive investigation, MBTA officials now say a broken axle is to blame for a derailment on the Red Line back in June.
Three months after a Red Line train derailed causing significant damage and massive delays, regularly scheduled service has resumed, MBTA officials said Wednesday.
The signal system between JFK/UMass and North Quincy was repaired over the weekend but crews finished testing it Wednesday.
When the train derailed June 11 near the JFK/UMass station in Boston's Dorchester neighborhood, three signal bungalows which housed track switches had to be repaired. Twenty miles of signal cable also had to be replaced.
Due to the repairs, the MBTA was forced to run trains at reduced speeds along stretches of the track, which caused delays for commuters.
Following an extensive investigation, MBTA officials said last week a broken axle was to blame for the derailment.
The work had originally been expected to be completed by Labor Day but was pushed back to mid-October.
