The Carbon Cut-Off Railway was a railroad line in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Wyoming

Wyoming

Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

. In 1889 the Union Pacific Railroad

Union Pacific Railroad

The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....

 invested $221,000 (equivalent to about $ today) to construct a rail line from Allen station on the main line (near Medicine Bow) to their coal mines near Hanna

Hanna, Wyoming

Hanna is a town in Carbon County, Wyoming, United States. The population was 873 at the 2000 census.-Geography:Hanna is located at ....

. In 1892 the railroad operated 17.16 miles (27.6 km) of track between Allen and Hanna and an additional 2.06 miles (3.3 km) of track to the Hanna mine.

Later the UP abandoned its original main line between Allen and Dana, and now the Carbon Cut-Off Railway, along with a connection from Hanna to Dana, is part of the UP's Laramie Subdivision.