It was a historic day for Union Pacific's steam program. After months of preparation, UP’s Big Boy No. 4014 returned to the national rail network in the early morning hours of Jan. 26, 2014, to the applause of the hundreds of rail fans on hand to experience the moment.
The mammoth steam locomotive departed its former home at the Los Angeles County Fairgrounds in Pomona, Calif., at around 1:45 a.m. Pacific Time, to begin its 56-mile trek on Metrolink and Union Pacific track to UP’s Colton, Calif., rail yard.
UP Steam Locomotive Big Boy #up4014 Moving W near LA VERNE, CA at 3:00 AM PST on Sunday 1/26. Track online at http://t.co/dMndwa7Y4B
— UP Steam (@UP_Steam) January 26, 2014
The long awaited Tweet for rail fans everwhere, announcing that No. 4014 was on it's way back to Cheyenne to be restored.
"The move went off flawlessly," said Ed Dickens, senior manager of Union Pacific's Heritage Operations. "We came into Covina very carefully and methodically. We were prepared to deal with little issues, but those issues didn't materialize."

Big Boy No. 4014 prepped to leave Pomona, California.
While the Big Boy had been thoroughly prepared and inspected prior to the move, Dickens said there are some parts inside the engine that are simply impossible to carefully inspect. “We have little access to those huge roller bearings, which have been sitting since 1962,” he said. “The good news is that they reside in a semi-sealed environment.”
The equipment used to move the mammoth locomotive included two diesel locomotives and 10 freight cars used for braking. As part of the operation, the train also delivered UP diesel locomotive No. 3105, a UP caboose and UP boxcar to the RailGiants Museum, where they will become part of the museum’s permanent display.
Dickens said the crowd on hand to see the Big Boy return to live rail operations was enormous. “The huge crowd was literally pressed against the chain link fence,” he said. "The mood was very happy and very vocal, with lots of clapping. It was really a magical moment as the Big Boy was pulled backward by No. 1996, the Southern Pacific heritage locomotive, from our holding track to Metrolink’s track."
Top speed during the move was 20 mph. Dickens said the operation was completed by 4:30 p.m. with the arrival of No. 4014 to Colton Yard, where it will remain over the coming months before its move to Cheyenne, which has yet to be scheduled.
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Dickens thanked the many who worked first-hand on the operation at Union Pacific’s Los Angeles Service Unit, including General Superintendent Rod Doerr, Regional Vice President Transportation Shane Keller, the folks at UP’s Harriman Dispatching Center and Metrolink.
