2-2-2 "Single" Locomotives in the USA

The 2-2-2 wheel arrangement was a natural progression from the 0-2-2 and the 2-2-0 arrangements. The additional axle of the 2-2-2 provided more stability and allowed the locomotive to have a larger firebox. It was first found on the Patentee locomotive built by Robert Stephenson and Company in 1833. Locomotives of this wheel arrangement was sometimes called "Singles" because they had a single driven axle (which could also be said of the various other single driven axle wheel arrangements).

Railroads that used 2-2-2 "Single" Locomotives in the USA (data provided by Steve Llanso of Sweat House Media)

Railroads that used 2-2-2 locomotives in other countries

Surviving Examples of 2-2-2 "Single" Locomotives in the USA

No.	F.M. Whyte	Gauge	Railroad Line	Location	Status	Builder Info	Notes
	2-2-2T		Cumberland Valley	a few miles offshore, Asbury Park, NJ	sunk	Seth Wilmarth, 1850	The year of 1850 is only an estimate.
	2-2-2T			a few miles offshore, Asbury Park, NJ	sunk	1850
13	2-2-2T	4'-8½"	Cumberland Valley	B&O Railroad Museum, Baltimore, MD	display	Seth Wilmarth, 1851	Named Pioneer. On loan from the Smithsonian Museum.
	2-2-2T	4'-8½"	Reading	Museum of Transportation, St. Louis, MO	display	Baldwin #10174, 05/1889	Named Black Diamond.

Wes Barris