Repair work on the Grand Junction Bridge in November, 2012.
On November 21, 2012, the Grand Junction Railroad Bridge was closed to all rail traffic due to its poor condition. This was a change from a restriction put in place days earlier, on November 16, which barred freight trains from crossing, as well as restricting MBTA and Amtrak equipment moves to 5 MPH. While emergency repairs were under way, trains moving between the north and south sides of Boston had to be routed via Pan Am Railways trackage between Ayer, Massachusetts and Worcester, Massachusetts (a 100+ mile detour). The bridge reopened in early January 2013, but was closed again in March for major structural repairs, reopening again in June.