| USRA Heavy Mountain | |
| Powertype: | Steam |
| Whytetype: | 4-8-2 |
| Uicclass: | 2′D1′ h2 |
| Builddate: | 1918-1926 |
| Totalproduction: | 15 (plus 37 copies) |
| Axleload: | 60000lb |
| Weightondrivers: | 240000lb |
| Locoweight: | 350000lb |
| Tenderweight: | 172000lb |
| Locotenderweight: | 522000lb |
| Fueltype: | Coal |
| Fuelcap: | 32000lb |
| Watercap: | 10000usgal |
| Boilerpressure: | 200sigfig=3NaNsigfig=3 |
| Firearea: | 76.3square feet |
| Tubearea: | 2790square feet |
| Fluearea: | 1323square feet |
| Fireboxarea: | 346square feet |
| Totalsurface: | 4666square feet |
| Superheaterarea: | 10780square feet |
| Cylindercount: | Two |
| Cylindersize: | 28x |
| Valvegear: | Walschaerts |
| Valvetype: | 14inches piston valves |
| Tractiveeffort: | 582002NaN2 |
| Factorofadhesion: | 4.1 |
| Preservedunits: | 0 |
| Scrapdate: | 1940-1959 |
| Disposition: | All scrapped |
The USRA Heavy Mountain was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light freight locomotive of the USRA types, and was of 4-8-2 wheel arrangement in the Whyte notation, or 2′D1′ in UIC classification.
A total of 15 locomotives were built under the auspices of the USRA.
| align=left | 5 | 543-547 | align=left | Built 1918 by Baldwin. Renumbered from 133-137. Scrapped 1940-1947. | ||
| align=left | 10 | K2 | 116–125 | align=left | Built 1919 by ALCO. Scrapped 1951-1952. | |
| Total | 15 |
|---|
| align=left | 2 | 548–549 | Built 1923 by ALCO. Renumbered from 138-139. Scrapped in 1948. | |||
| align=left | 23 | 801 | 801–823 | align=left | Built 1926 by ALCO Schenectady. Scrapped 1950-1952. | |
| align=left | 12 | K2a | 126–137 | align=left | Built 1923 by Baldwin. Scrapped 1947-1959. | |
| Total | 37 |
|---|