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  2. 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 ...

  3. 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 ...

  4. 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.

  5. List of mountain passes in Colorado - Wikipedia

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

    This is a list of some important mountain passes in the Rocky Mountains of the U.S. State of Colorado. ... Eisenhower Tunnel [l] 11,158 feet 3,401 m 7.0% EB 6.0% WB:

  6. 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 ...

  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 ...