The CM served Leadville’s mines and smelters until 1906, with tracks in Iowa Gulch and California Gulch, areas now termed the Leadville mining district. Service was discontinued in 1918 due to financial difficulties. The old Midland grade is still evident in Granite and sections of bridge can be seen about two miles south where the track crossed over to the west side of the river at Clear Creek. Evidence of the old bridge remains visible to hikers and four tunnels still exist farther south closer to Buena Vista.