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  2. Black Suspension Bridge - Wikipedia

    en.wikipedia.org/wiki/Black_Suspension_Bridge

    The Black Suspension Bridge (also known as the Kaibab Trail Suspension Bridge) spans the Colorado River in the inner canyon of Grand Canyon National Park. The span length is 440 feet (130 m). [ 1 ] The bridge is part of the South Kaibab Trail and is the river crossing used by mules going to Phantom Ranch .

  3. Navajo Bridge - Wikipedia

    en.wikipedia.org/wiki/Navajo_Bridge

    Navajo Bridge is the name of twin steel spandrel arch bridges that cross the Colorado River in the Grand Canyon National Park [Note 1] (near Lees Ferry) in northern Coconino County, Arizona, United States.

  4. List of tunnels in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_tunnels_in_the...

    Mitchell Point Tunnel: Columbia River Gorge west of Hood River: automobile, 2 lane: 385: 1915: closed in 1954, demolished in 1966, part of Historic Columbia River Highway: Mosier Twin Tunnels: Columbia River Gorge east of Mosier (near The Dalles) automobile, 2 lane: 350 (combined) 1921: part of Historic Columbia River Highway: Oneonta Tunnel

  5. Gore Canyon - Wikipedia

    en.wikipedia.org/wiki/Gore_Canyon

    Gore Canyon, elevation 6,985 feet (2,129 m), [1] is a short isolated canyon on the upper Colorado River in southwestern Grand County, Colorado in the United States. Steep and rugged, the approximately 3-mile-long (4.8 km) gorge was carved by the river as it passed the northern end of the Gore Range southwest of Kremmling. The Colorado descends ...

  6. Marble Canyon Dam - Wikipedia

    en.wikipedia.org/wiki/Marble_Canyon_Dam

    One appealing aspect of a Marble Canyon damsite was the potential to develop the Grand Canyon's hydroelectric potential without building a dam or reservoir in Grand Canyon National Park, by diverting about 90% of the Colorado River's waters at Marble Canyon into a 38-mile (61 km) tunnel, 36 feet (11 m) in diameter and capable of carrying about ...

  7. 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 ...

  8. Ringbolt Rapids - Wikipedia

    en.wikipedia.org/wiki/Ringbolt_Rapids

    [2]: 47, 49 Ringbolt Rapids gets its name from the ring bolt driven into the canyon wall there in 1866, to allow the pioneering steamboat Esmerelda to affix a line to it and draw itself up through the rapids by means of its capstan, to complete its voyage to Callville. [2]: 49

  9. Marble Canyon - Wikipedia

    en.wikipedia.org/wiki/Marble_Canyon

    Marble Canyon is also well known for the Navajo Bridge, where US Highway 89A crosses the Colorado River. Marble Canyon marks the western boundary of the Navajo Nation. In 1975, the former Marble Canyon National Monument, which followed the Colorado River northeast from the Grand Canyon to Lee's Ferry, was made part of Grand Canyon National Park.