State Highway 9 (SH 9) in the U.S. state of Colorado is a 138-mile-long (222 km) state highway through central Colorado. SH 9's southern terminus is at U.S. Route 50 (US 50) near Cañon City, and the northern terminus is at US 40 in Kremmling. SH 9 is part of the Gold Belt Byway from US 50 to High Park Road and the Colorado River Headwaters National Scenic Byway from US 40 to Trough Road.

U.S. Route 50 (US 50) is a part of the U.S. Highway System that travels from West Sacramento, California, to Ocean City, Maryland. In the U.S. state of Colorado, US 50 is a major highway crossing through the lower midsection of the state. It connects the Western Slope with the lower Front Range and the Arkansas Valley. The highway serves the areas of Pueblo and Grand Junction as well as many other smaller areas along its corridor. The long-term project to widen the highway from two lanes to a four lane expressway between Grand Junction and Montrose was completed in January 2005. Only about 25% of the remainder of highway 50 in Colorado is four lane highway.