Union Pacific Class TTT-6

The Union Pacific Class TTT-6 is a class of 2-10-2 "Santa Fe" type steam locomotives built by the Baldwin Locomotive Works as part of the Union Pacific Railroad's TTT Series.
==History==
Between 1917 and 1924, the Union Pacific Railroad had purchased 144 2-10-2 "Santa Fe" types, divided into a total of seven classes, TTT-1, TTT-2, TTT-3, TTT-4. TTT-5, TTT-6 and TTT-7. American Locomotive Company (ALCO) had built 18 examples, Baldwin Locomotive Works had built 88 examples and Lima Locomotive Works had built 37 examples. Despite the divided classes, all of the UP 2-10-2s had the same cylinder dimensions, driving wheel diameter and boiler pressure.
Withdrawal of the class had occurred and not all of them were scrapped, one examples had survived into preservation, and that sole survivor is #5511, No. 5511 was spared from the scrap heap and was stored inside the UP's Cheyenne Roundhouse for the next six decades. During that time, the locomotive was temporarily repainted and pulled out of the UP's Cheyenne Roundhouse and moved outside, onto a turntable to be displayed for a National Railway Historical Society (NRHS) convention. Subsequently, the locomotive was stored without boiler jacketing. As of today, No. 5511 is currently awaiting a full restoration to operational condition.
==Roster==
Class	Qty.	Road Numbers	Road 	Year Built	Builder
TTT-6	10 	5040-5049 	UP 	1923 	ALCO
TTT-6	3 	5050-5052 	UP 	1923 	Baldwin
TTT-6	37 	5053-5089 	UP 	1923 	Lima
TTT-6	8 	5306-5313 	OSL 	1923 	ALCO
TTT-6	15 	5500-5514 	LA&SL	1923 	Baldwin
==Stock list==
Loco No.	Image	Build date 	Manufacturer 	Status
5075 	 	1923 	Lima Locomotive Works 	Scrapped
5085 	 	1923 	Lima Locomotive Works 	Scrapped
5089 	 	1923 	Lima Locomotive Works 	Scrapped
5508 	 	1923 	Baldwin Locomotive Works	Scrapped
5510 	100px	1923 	Baldwin Locomotive Works	Scrapped
5511 	 	September 1923	Baldwin Locomotive Works	Awaiting a restoration to running condition by the Railroading Heritage of Midwest America (RRHMA).
== Gallery ==
* Gallery
Category:2-10-2 locomotives
Category:Sole survivor
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Category:2-10-2 steam locomotives
Category:Standard gauge locomotives of the United States