Massachusetts Bay Transportation Authority, Canton, Massachusetts
The Canton Viaduct is a key link on the 150 mph Northeast Corridor Main Line. The 175-year old stone arch viaduct was converted from a single track operation to two-track service as part of the rehabilitation. TranSystems was responsible for the inspection, using lift equipment, free climbing techniques, divers, and the removal of selected stones to provide access to interior voids. TranSystems then designed the temporary and final track locations over and approaching the viaduct, which will carry MBTA commuter, Amtrak passenger and Conrail freight. Design parameters include future 150-mph operations of conventional and high speed equipment (tilt-train).