#2134
Union Pacific 9000 Class
🇺🇸 United States ·built by American Locomotive Company· from 1926· class of American 4-12-2 locomotives
4 photos from Wikimedia Commons · credits & licences
- 1. UP 9000 2: Wikimedia Commons· CC BY-SA 3.0
- 2. Union Pacific Railway No. 9000 at the RailGiants Train Museum - May 2024 - 01: Jeremy Thompson· CC BY 2.0
- 3. Union Pacific UP-2 class: Wikimedia Commons· Public domain
- 4. Union Pacific UP-4 class: Bob Fremming-Dallas, Wisconsin· Public domain
what is it?
The Union Pacific Railroad 9000 Class is a class of 88 4-12-2 "Union Pacific" type steam locomotives built by ALCO between 1926-1930, they have 3 cylinders. They were the largest steam locomotives fitted with Gresley conjugated valve gear licensed from the British London and North Eastern Railway. They were 102 feet in length, making them the largest rigid wheelbase locomotives ever built.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 100 years ago, in 1926.
- Weighs about as much as 38 African elephants (~6 t each).
- 31.1 m long: about 7 cars parked nose to tail.
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1926–1930
- number built
- 88
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- American Locomotive Company
- operators
- Union Pacific Railroad
- top speed
- 97 km/h
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-12-2
- length
- 31.1 m
- weight
- 225 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q86707716, Wikipedia: Union Pacific 9000 Class (CC BY-SA 4.0).Updated 2026-10-25.