Southern Pacific Class AC-11

Southern Pacific Railroad's AC-11 Class (meaning Articulated Consolidation) of cab forward steam locomotives was the seventh class of 4-8-8-2 locomotives ordered by Southern Pacific (SP) from Baldwin Locomotive Works; SP was so pleased with the AC-10 class built a year earlier that the railroad began placing orders for AC-11s while the AC-10s were still being built and delivered. They were built between November 1942 and April 1943, closely resembling the AC-10s.
The first AC-11, number 4245, entered service on November 24, 1942, and the last, 4274, on May 9, 1943. SP used these locomotives for between 12 and 15 years, with the last retirements from this class occurring on September 24, 1958. Shortly after their retirement, the AC-11s were scrapped, with the last, number 4274, on April, 1959.
None of the members of this class were preserved.
== Incidents ==
In January 1952, No. 4245 was used in an unsuccessful attempt to rescue the snowbound City of San Francisco passenger train, which was trapped in 12-foot drifts by a heavy blizzard at Yuba Pass, 17 miles west of Donner Pass and 5 miles east of Emigrant Gap in the Sierras. Attempting to reach the stuck train with snow fighting equipment, the engine along with the steam-driven rotary snowplow that it was pushing were hit by an avalanche, derailing and becoming trapped as well. Later, they were hit by a second, larger avalanche, which overturned the plow and its tender, killing No. 4245's engineer, Rolland "Rolly" Raymond, who at that point had been outside standing next to it, becoming one of only two casualties in the incident. The second SP worker to die, Jay Gold, succumbed to a stress-induced heart attack from the physical exertion of the rescue effort. 
==Stock list==
Image	Loco No.	Build date(s)	Builder 	Status 	Notes
 	4245 	November 1942	Baldwin Locomotive Works	Scrapped	Involved in an avalanche incident, repaired and returned to service, and was scrapped after it was retired.
 	4246 	 	Baldwin Locomotive Works	Scrapped	
 	4247 	 	Baldwin Locomotive Works	Scrapped	
 	4248 	 	Baldwin Locomotive Works	Scrapped	
 	4249 	 	Baldwin Locomotive Works	Scrapped	
 	4250 	- 	Baldwin Locomotive Works	Scrapped	
 	4251 	 	Baldwin Locomotive Works	Scrapped	
 	4252 	 	Baldwin Locomotive Works	Scrapped	
 	4253 	 	Baldwin Locomotive Works	Scrapped	
 	4254 	 	Baldwin Locomotive Works	Scrapped	
 	4255 	 	Baldwin Locomotive Works	Scrapped	
 	4256 	 	Baldwin Locomotive Works	Scrapped	
 	4257 	 	Baldwin Locomotive Works	Scrapped	
 	4258 	 	Baldwin Locomotive Works	Scrapped	
 	4259 	 	Baldwin Locomotive Works	Scrapped	
 	4260 	 	Baldwin Locomotive Works	Scrapped	
 	4261 	 	Baldwin Locomotive Works	Scrapped	
 	4262 	 	Baldwin Locomotive Works	Scrapped	
 	4263 	 	Baldwin Locomotive Works	Scrapped	
 	4264 	 	Baldwin Locomotive Works	Scrapped	
 	4265 	 	Baldwin Locomotive Works	Scrapped	
 	4266 	 	Baldwin Locomotive Works	Scrapped	
 	4271 	1943 	Baldwin Locomotive Works	Scrapped	
 	4272 	1943 	Baldwin Locomotive Works	Scrapped	
 	4273 	1943 	Baldwin Locomotive Works	Scrapped	
 	4274 	April 1943 	Baldwin Locomotive Works	Scrapped	Selected for an excursion train run over Donner Pass, retired from active service and scrapped.
==Gallery==
File:9604448750 c68b830f24.jpg|A model of what No. 4245 looked like
File:FB IMG 1673125197018.jpg|4245 trapped in the snow after derailing at Yuba Pass. January 1952
File:658fae9fecbb6680deffc73cdf035b4e.jpg
Category:Scrapped steam locomotives
Category:Locomotives
Category:Standard gauge locomotives
Category:Standard gauge locomotives of the United States
Category:Steam locomotives
Category:Tender locomotives
Category:Articulated locomotives
Category:Southern Pacific locomotives
Category:American steam locomotives
Category:American locomotives
Category:Baldwin locomotives
Category:Cab forward locomotives
Category:Built in 1942
Category:Built in 1943
Category:Eight-coupled locomotives
Category:4-8-8-2 locomotives
Category:4-8-8-2 steam locomotives
Category:Scrapped locomotives
Category:Cab forward steam locomotives
Category:Locomotives featured in media