 The D&RG then joined with the Colorado Midland to build a line from Glenwood Springs connecting with D&RG at Grand Junction.Originally considered a secondary branch route to Grand Junction, the entire route from Leadville to Grand Junction was upgraded to standard gauge in 1890, and the original narrow-gauge route via Marshall Pass became a secondary route.The original Denver & Rio Grande Western Railway built a narrow-gauge line from Ogden, Utah via Soldier Summit, Utah to Grand Junction, Colorado.