Pittsfield to Springfield

From the junction at CP-150 (MP 150.6), where double track starts and the Housatonic Railroad line from Danbury trails in from the south, a road alongside to the north, three road bridge overhead, a bridge over a street at MP 149.67, the passenger station with platform to the north at Pittsfield (MP 148.5), two extra tracks to the north, a road bridge overhead, a derelict factory to the north, extra track to the north, a road bridge overhead, a divided highway alongside to the north, and four yard tracks on the north side of the old line at the former junction with the line north to North Adams at North Adams Junction/CP-147 (MP 147.8), where there is a box labeled "147" on the north side, the double track, CTC with Cab Signals, with maximum speed 50 mph for passenger trains and 40 mph for freights, climbing again now that it has traversed the Housatonic River valley, heads east-northeast, past a bridge over a river, a spur to a lumber mill on the north side, a bridge overhead, and detectors at MP 145.9.

There is an old spur on the north side, and old depot on the north side, Dalton, where the line turns east, past a bridge over a road, a road alongside to the north, and a road bridge overhead,  and then curvily just east of due south, past a road bridge overhead, and crossovers at Hinsdale/CP-140 (MP 140.1), and then south-southwest and south-southeast past a sign on the north side of the line at the summit of the Berkshire Mountains at Washington (MP 138.7), MP 137.7, where the passenger speed limit drops to 40 mph and the freight speed limit for eastward (descending) trains drops to 30 mph, a pond or lake alongside to the north, a dirt track grade crossing, two rocky cuttings, a bridge over a road, and MP 136.

The line turns south, past Becket, where it turns curvily east-southeast, detectors at MP 135.0 ("Becket, MA"), a dirt road grade crossing, a river alongside to the north, a bridge over the stream/river, Middlefield, MP 134.0, where the freight speed limit for eastward (descending) trains drops to 25 mph, a dirt road alongside to the north, three road bridges overhead, a through girder bridge over a river, a sharp turn northeast, a bridge over a stream/river, three through girder bridges over the river with stretches of rocky cutting between them, a rocky cutting, MP 131, a bridge over a road, MP 130,  and a clockwise horseshoe back to just east of due south, past two bridges over the river with short rocky cuttings between them, MP 127.0, where the speed limit becomes 45/40, a road alongside to the north, a dirt track grade crossing, a road bridge overhead, and C&B Junction, where it turns south and a branch to Becket Quarry once headed southwest.

There is a dirt track grade crossing, a through girder bridge over the river, a rocky cutting, Chester (MP 126.1), where it turns curvily southeast and there is a railroad museum on the north side, a bridge over a road, a through girder bridge over a river, a bridge over a stream, an angled road bridge overhead, a bridge over a river, open meadows, a bridge over a culvert, MP 124 in the woods, a through girder bridge over a river, the end of double track at CP-123 (MP 123.1),with a box labeled "123" on the north side, a road bridge overhead, a road alongside to the north, MP 122, a dirt road grade crossing, a river alongside to the north, a turn to the east, an angled grade crossing, a through girder bridge over a river, a road bridge overhead, Huntington (MP 119.2), where it turns curvily just east of due south, a deck girder bridge over a river, a bridge over a stream in a curved area, and a speed restriction of 35 mph for the curves between MP 116.8 and MP 113.7, rising to 40 mph to the east of the latter, including a detector at MP 115.4.

The line continues past Russell, a road bridge overhead, and a derelict factory on the east side, and turns east, past a dirt road grade crossing, and then south again, past Woronoco (MP 112.4), a turn southeast, MP 112.0, where the passenger speed limit rises to 50 mph, two dirt track grade crossings, CP-109 (MP 109.8), with a box labeled "109" on the north side, where double track resumes, a dirt track grade crossing in the woods, and a turn east.

The Pioneer Valley Railroad heads away north at a wye on the north side, and once crossed on the flat and headed south, at CP-107 (MP 107.9), where there is an old brick depot on the north side, a bridge over a street and  the main line turns southeast again, past one west-facing and two east-facing tracks serving a lumber mill on the north side, a track heading away on the north side, a bridge over a road, a street alongside to the south, signals on a signal bridge, extra track on the north side at Springdale Quarry, Trap Rock (MP 105.1), MP 104.7, where the passenger speed limit drops to 40 mph, detectors at MP 103.6, an angled road bridge overhead, MP 103, a turn east in the woods, two grade crossings, and crossovers at CP-100 (MP 100.5), where the line turns south-southeast.

There is an eight-track yard on the south side and an eight-track yard on the north side, with two more tracks beyond that to the north, crossovers at West Springfield/CP-99 (MP 99.1), where there is a box labeled "99" on the north side, a line once trailed in from the south, the line turns east-northeast, and a speed restriction of 20 mph starts (to MP 98.1), a turn east, dual through truss bridges over the Connecticut River (one track each), the flat crossing with the former Boston & Maine line, dual highway bridges overhead, a bridge over a divided street, with the southeast quadrant connector on which Amtrak’s Springfield line turns northeast trailing into the south side of the former Conrail Boston line, at the junction at CP-98 (MP 98.6), where speeds are restricted to 10 mph from the Amtrak line, and 5 mph on the northeast quadrant connector from the same line, into the Springfield passenger station (MP 98.4), which has a north side and two island platforms with umbrella sheds and elevators to a pedestrian subway below, connecting to the main depot building on the north side of the tracks.