#1775
Pennsylvania Railroad I1 class
🇺🇸 United States ·built by Baldwin Locomotive Works· from 1916· class of 598 American 2-10-0 locomotives
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1 photo from Wikimedia Commons · credits & licences
- 1. Pennsylvania Railroad Steam Locomotive -4483 (1): Shinerunner at English Wikipedia· CC BY-SA 3.0
what is it?
The Pennsylvania Railroad (PRR) class I1s steam locomotives were the most numerous class of 2-10-0 "Decapods" in the United States. They were also the second-largest 2-10-0 locomotives in the country by weight and tractive effort (surpassed only by the Western Maryland class I-2). From 1916 to 1923, 598 locomotives were produced (123 at the railroad’s Altoona Works and 475 at Baldwin Locomotive Works).
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 110 years ago, in 1916.
- Weighs about as much as 29 African elephants (~6 t each).
- Served for 41 years (1916–1957).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1916–1923
- in service from
- 1916
- retired
- 1957
- status
- retired
- number built
- 598
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- Baldwin Locomotive Works, Altoona Works
- operators
- Pennsylvania Railroad
- top speed
- 80 km/h
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 2-10-0
- weight
- 175 t
- nicknames
- Hippos
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7120491, Wikipedia: Pennsylvania Railroad I1 class (CC BY-SA 4.0).Updated 2026-10-25.