Big Boy

This is the Big Boy Steam Engine located in Cheyenne, Wyoming. Just twenty-five of these engines were built. They were designed for the express purpose of replacing the multiple engine configurations used in climbing over the steep grades of the Rocky Mountain passes. Only eight of these survive to this day.

U.S. Bigboy Locomotive
Years Built	No. Built	Weight	Length	Height	Drive Wheels	Top Speed
1941-1945	25	254 Tons	131 Ft.	16 Ft.	Eight	81 MPH *

* Within acceptable safety parameters
All figures are approximate