description Rio Grande K-37 Overview
The Rio Grande K-37 was a class of narrow-gauge 2-8-2 Mikado steam locomotives operated by the Denver and Rio Grande Western Railroad. Built in 1928 and 1930, these locomotives were rebuilt from older standard-gauge engines to handle heavy freight on the railroad's mountainous narrow-gauge lines in Colorado. They were among the largest and most powerful narrow-gauge locomotives in the United States. Today, several examples of the K-37 class have been preserved on heritage railroads, where they operate for tourists and railway enthusiasts.
help Rio Grande K-37 FAQ
What railroad company operated the K-37 steam locomotives?
The Rio Grande K-37 class of steam locomotives was operated exclusively by the Denver and Rio Grande Western Railroad. They were utilized primarily on the company's narrow-gauge lines in Colorado and New Mexico.
What is the wheel arrangement of the Rio Grande K-37?
The K-37 locomotives feature a 2-8-2 Mikado wheel arrangement. This configuration, featuring two leading wheels, eight driving wheels, and two trailing wheels, provided the necessary traction for pulling heavy freight over mountain passes.
How were the Rio Grande K-37 locomotives uniquely constructed?
Built in 1928 and 1930, these locomotives were actually rebuilt from older standard-gauge engines rather than built from scratch. The Denver and Rio Grande Western Railroad converted them to narrow gauge to handle heavy freight on mountainous routes.
Are any Rio Grande K-37 locomotives preserved today?
Yes, several K-37s have survived into the modern era as operational or display pieces. For example, K-37 number 491 is currently on static display at the Colorado Railroad Museum in Golden, Colorado.
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