ALCo PA/PB

Built by ALCo, GE

Weight

139 t

306,442 lb

Length

20.02 m

65 ft 8 in

Track gauge

1,435 mm

Standard gauge

Years built

1946–1953

297 units

Axle arrangement

(A1A)(A1A)

Overview of the ALCo PA/PB

Discover the classic ALCo PA/PB diesel locomotive, a remarkable piece of American railway heritage.

Built by ALCo and GE between 1946 and 1953, these locomotives are known for their distinctive design and powerful performance.

This particular ALCo PA/PB, a type PA4, is preserved at the Oregon Rail Heritage Center in the United States, offering a glimpse into a bygone era of rail travel.

With a gauge of 1435 mm, a length of 20.02 meters, and a weight of 139 tons, the ALCo PA/PB represents a significant engineering achievement.

Explore the history and legacy of this iconic diesel locomotive.

ALCo PA/PB technical specifications

	Value	Imperial / US
Built by	ALCo, GE · 1946–1953297 units
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	(A1A)(A1A)
Length	20.02 m65 ft 8 in	65 ft 8 in
Weight	139 t306,442 lb	306,442 lb