Union Pacific “Living Legend” No. 844
Specifications
| Road Name | Living Legend |
| Number | 844 |
| Original Railroad | Union Pacific Railroad |
| Builder | American Locomotive Company (ALCO), Schenectady, NY |
| Build Date | December 22, 1944 |
| Wheel Arrangement | 4-8-4 (FEF-3 class) |
| Gauge | Standard gauge (4 ft 8½ in) |
| Weight | 486,340 lb locomotive; 907,890 lb total with tender |
| Tractive Effort | 63,800 lbf |
| Boiler Pressure | 300 psi |
| Driver Diameter | 80 in |
| Years Operated | 1944–present (continuous, never formally retired) |
| Current Status | Operational — never formally retired by Union Pacific |
| Current Location | Cheyenne, Wyoming |
| Current Owner | Union Pacific Railroad |
Union Pacific No. 844 is a class FEF-3, 4-8-4 “Northern”-type steam locomotive delivered to Union Pacific in December 1944. It was the last of the railroad’s 4-8-4 steam locomotives, hauling UP’s premier passenger trains including the Overland Limited, Los Angeles Limited, Portland Rose, and Challenger.
As dieselization swept the railroad in the late 1950s, No. 844 was reassigned to fast freight duty in Nebraska. Rather than being scrapped like nearly all of its sister locomotives, it was retained in 1960 by Union Pacific leadership for promotional and special-service use, becoming the founding engine of the company’s heritage steam program.
No. 844 holds the distinction of being the only steam locomotive in North America never formally retired by a Class I railroad, having remained in continuous Union Pacific ownership and periodic active service since its 1944 delivery. It has since logged hundreds of thousands of miles pulling public excursion trains and appearances across the UP system, earning it the nickname “Living Legend.” It is maintained and based at Union Pacific’s Steam Shop in Cheyenne, Wyoming, alongside sister heritage locomotive No. 4014 “Big Boy.”