State Highway 340 (SH 340) is a 13.341 mi (21.470 km) long state highway in the U.S. state of Colorado. The highway's western end is at U.S. Route 6 (US 6) and US 50 in Fruita, and the eastern end is at the junction of US 50 and I-70 Business (I-70 Bus.) in Grand Junction. This highway is mainly used by the residents of Grand Junction's suburb Redlands.