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  2. Eisenhower Tunnel - Wikipedia

    en.wikipedia.org/wiki/Eisenhower_Tunnel

    The Eisenhower Tunnel, officially the Eisenhower–Edwin C. Johnson Memorial Tunnel, [1] is a dual-bore, four-lane vehicular tunnel in the western United States, approximately 60 miles (97 km) west of Denver, Colorado. The tunnel carries Interstate 70 (I-70) under the Continental Divide in the Rocky Mountains. With a maximum elevation of 11,158 ...

  3. Moffat Tunnel - Wikipedia

    en.wikipedia.org/wiki/Moffat_Tunnel

    The railroad tunnel is 24 feet (7.3 m) high, 18 feet (5.5 m) wide, and 6.2 miles (10.0 km) long. The apex of the tunnel is at 9,239 feet (2,816 m) above sea level. The tunnel has a gradient of 1 in 125 (0.8%). [3] As of 1989, the Moffat was the fourth-longest railroad tunnel in North America.

  4. Alpine Tunnel - Wikipedia

    en.wikipedia.org/wiki/Alpine_Tunnel

    Alpine Tunnel. Alpine Tunnel is a 1,772 ft (540 m) narrow gauge railroad tunnel located east of Pitkin, Colorado, on the former Denver, South Park and Pacific Railroad route from Denver to Gunnison. At an elevation of 11,523 feet (3,512 m), it was the first tunnel constructed across the Continental Divide in Colorado and was the highest ...

  5. Interstate 70 in Colorado - Wikipedia

    en.wikipedia.org/wiki/Interstate_70_in_Colorado

    The Eisenhower Tunnel, with a maximum elevation of 11,158 feet (3,401 m) and length of 1.7 miles (2.7 km), is the longest mountain tunnel and highest point along the Interstate Highway System. The portion through Glenwood Canyon was completed on October 14, 1992.

  6. Alva B. Adams Tunnel - Wikipedia

    en.wikipedia.org/wiki/Alva_B._Adams_Tunnel

    The Alva B. Adams Tunnel is the principal component of the largest transmountain water project in Colorado, the Colorado-Big Thompson Project (C-BT). The tunnel transfers water from the western slope of the Colorado River drainage to the eastern Front Range of Colorado. It is 13.1 miles (21.1 km) long, with a concrete lined diameter of 9.75 ...

  7. Wolf Creek Pass - Wikipedia

    en.wikipedia.org/wiki/Wolf_Creek_Pass

    View to the south into the snaking West Fork of the San Juan River as seen from US 160, halfway up to the pass The tunnel on the east side of the pass, opened in 2005.. Wolf Creek Pass, once a two-lane road winding through the San Juan Mountains between South Fork, Colorado, and Pagosa Springs, has been expanded into a multi-lane highway, greatly increasing the traffic capacity of the pass and ...

  8. Loveland Pass - Wikipedia

    en.wikipedia.org/wiki/Loveland_Pass

    Loveland is the highest mountain pass in Colorado that regularly stays open during a snowy winter season. [4] When the Eisenhower Tunnel opened in March 1973, it allowed motorists on Interstate 70 (I-70) to avoid crossing the pass directly.

  9. List of mountain passes in Colorado - Wikipedia

    en.wikipedia.org/wiki/List_of_mountain_passes_in...

    Relief map of the U.S. State of Colorado. This is a list of some important mountain passes in the Rocky Mountains of the U.S. State of Colorado . Mountain passes and highway summits traversed by improved roads