A "big boy" locomotive which is being restored to operating condition by Union Pacific is scheduled to visit Cheyenne on Thursday, according to Visit Cheyenne CEO Darren Rudloff.

The American Locomotive Company of Schenectady, New York built 25 of the monster steam engines between 1941 and 1945. Locomotive 4014 is being restored to operating condition and will eventually tour the country, according to Rudloff. The locomotives were originally designed to haul trains through mountainous terrain, and weigh around 1.2 million pounds when fully loaded with fuel.

Rudloff says the big boy is scheduled to arrive at the Cheyenne Depot at 1 p.m. Thursday, for a public viewing.