 and its companion business routes—US 87 Bus., US 20 Bus., and US 26 Bus.—split northwest from a trumpet interchange into the city while I-25 and the mainline U.S.Highways pass to the south of the city.I-25 crosses over the BNSF rail line and the North Platte River, then curves northwest to meet the business routes at a trumpet interchange on the west side of the city near the business routes' intersection with WYO 59, which leads north to Gillette.