#2723
Southern Pacific class AC-10
🇺🇸 United States ·built by Baldwin Locomotive Works· from 1942· class of 40 American 4-8-8-2 cab forward locomotives
what is it?
Southern Pacific Railroad's AC-10 class was the largest class of cab forward steam locomotives produced for the railroad. The design of this and the previous AC classes proved so successful for SP that the railroad began placing orders for the AC-10's successors, AC-11s, while Baldwin Locomotive Works was still busy building and delivering the AC-10s. Mechanically, the AC-10s were exceptionally similar to their immediate predecessors, the AC-8s.
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 84 years ago, in 1942.
- Weighs about as much as 50 African elephants (~6 t each).
- Served for 16 years (1942–1958).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1942
- in service from
- 1942
- retired
- 1958
- status
- retired
- number built
- 40
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- Baldwin Locomotive Works
- operators
- Southern Pacific Transportation Company
- top speed
- —
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-8-8-2
- weight
- 298 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7570291, Wikipedia: Southern Pacific class AC-10 (CC BY-SA 4.0).Updated 2026-10-25.