Union Pacific 6936

Specifications
Specifications
Configuration:;
• AAR	D-D
• UIC	Do'Do'
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Safety systems	Leslie S3LR

Type and origin
Type and origin
Power type	Diesel-electric
Builder	EMD
Model	DDA40X
Build date	January 1971

Union Pacific 6936
Union Pacific 6936
	UP 6936 photographed near Watseka, Illinois, pulling a business train.
Power type
Type and origin
Power type	Diesel-electric
Builder	EMD
Model	DDA40X
Build date	January 1971
Configuration:;
Specifications
Configuration:;
• AAR	D-D
• UIC	Do'Do'
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Safety systems	Leslie S3LR
Operators
Career
Operators	Union Pacific
Numbers	6936
Nicknames	"Centennial"
Current owner	Railroading Heritage of Midwest America
Disposition	Operational

Union Pacific 6936 is an EMD DDA40X locomotive built for the Union Pacific Railroad (UP). Previously a part of UP's heritage fleet, 6936 was for several decades the last remaining operational "Centennial" type, and thus the largest operational diesel-electric locomotive in the world. It is now owned by the Railroading Heritage of Midwest America in Silvis, Illinois, who plans to return the locomotive to operation.