Diesel Blues

Union Pacific 1982
Union Pacific heritage, MoPac locomotive by Andrew Mollmann

In 2005 and 2006, the Union Pacific unveiled a new set of six, EMD SD70ACe locomotives in unique heritage paint schemes, honoring the railroads acquired by UP since the 1980s. The engine numbers reflect the year that the predecessor railroad was absorbed into Union Pacific. The locomotives commemorate the Missouri Pacific with UP 1982, the Western Pacific with UP 1983, the Missouri-Kansas-Texas with UP 1988, the Chicago and North Western with UP 1995, the Southern Pacific with UP 1996, and the Denver and Rio Grande Western with UP 1989.

Andrew Mollmann has built this stunning LEGO® version of the Missouri Pacific “MoPac” locomotive from this fleet.

The real thing. Union Pacific’s MoPac heritage locomotive

Maybe it’s because I’m partial to blue. but I think the MoPac diesel is the best looking of the Union Pacific’s heritage diesel fleet.

Before decals were applied, we see the fireman’s side of Andrew’s model. photo by Andrew

And this diesel is more than just a pretty face. It can earn it’s keep pulling the heavy loads down the rail.


Andrew is no stranger to building great, modern diesel locomotives, but this MoPac heritage unit is my favorite so far. And thanks to Andrew’s electronics wizardry, it’s a sweet running engine that any one could could spend many hours enjoying.

Andrew’s MoPac Gallery on Flickr

The detailing and excellent decal work take this locomotive over the top. photo by Andrew

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