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Monday, July 13, 2026
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Kevin Morgan
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North Yard
Denver, CO
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75 (Add a Comment)
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Yard Shots
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Utah Railway
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Utah Railway 5004 was built by Morrison Knudsen in August 1995 as an MK5000C. The unit, one of six, had a 5,000 HP caterpillar prime mover. The six units were great for hauling heavy coal trains, but developed some mechanical issues. In 2003, they were rebuilt as MK50-3s, with their prime movers and alternators replaced with those from retired SD50s. They served on Utah Railway until 2017. After the decline of the coal, Genessee and Wyoming (parent company of Utah Railway) reassigned the six units to another railroad they owned, the KYLE in Colorado and Kansas. Increasingly, the units were being used for parts. Last month (June 2026), it was announced that UTAH 5004 will be preserved at the Utah State Railway Museum in Ogden, UT. In this shot, the unit is in North Yard in Denver, making its way toward Ogden.
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Monday, May 4, 2026
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Kevin Morgan
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North Yard
Denver, CO
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104 (Add a Comment)
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Yard Shots
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Union Pacific
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UP 3047 is one of roughly 200 SD70ACe-T4s that Union Pacific has on its roster. For the past decade, the EPA has mandated extremely strict emissions standards (known as "Tier-4" standards) for diesel-electric locomotives. Both Union Pacific and GE have locomotives that meet the requirements, but neither has experienced great success with sales in the United States. These units are more expensive up front, more expensive to maintain, and tend to be less reliable due to their complexity. Consequently, while a handful are in service, most railroads have instead created their own in-house rebuild program for older locomotives that are exempt, rather than spend extra money on purchases.
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Sunday, May 3, 2026
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Kevin Morgan
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North Yard
Denver, CO
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97 (Add a Comment)
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Yard Shots
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Union Pacific
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I was a bit surprised to find this old "triclops" SD60M sitting on the ready track in North Yard. I had heard that UP is slowly clearing out a lot of the units that have been stored in Grand Junction, which is likely where this relic of the 1980s and 1990s came from. Not sure if it is going to head for storage, a rebuild, sale, or the scrapper. Considering a chunk of the long hood behind the dynamic brake fan is missing at the top, I'm guessing the disposition might not be great!
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