Looking down on the Sherwood bridge from the Sherwood quarry drum. Hwy 6 is at the top, the Eagle River is flowing under the Sherwood bridge and I-70 is at the bottom. At the turn of the century, major routes in the Colorado mountains were steep, rocky grades, little more than wagon tracks. By 1910, cars were becoming more prominent but Colorado roads were in terrible condition. That year, the State Highway Commission established Highway 10 from...