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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 ...
The San Jacinto tunnel is considered the key link in Colorado River Aqueduct system. The 13 mi (21 km) long, 16 ft (4.9 m) diameter tunnel runs beneath the San Jacinto Mountains between Cabazon, California and Gilman Hot Springs in Riverside County, California .
The San Juan–Chama Project is a U.S. Bureau of Reclamation interbasin water transfer project located in the states of New Mexico and Colorado in the United States.The project consists of a series of tunnels and diversions that take water from the drainage basin of the San Juan River – a tributary of the Colorado River – to supplement water resources in the Rio Grande watershed.
Carving their way beneath oceans, glaciers and mountains, tunnels are an enduring source of fascination for travelers. From Japan to the Swiss Alps and the American Rockies, these are some of the ...
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: Columbia River Gorge near Multnomah Falls: automobile, 2 lane: 125: 1914: part of Historic Columbia River Highway: Robertson Tunnel: Portland: light commuter rail twin ...
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 railroad tunnel in ...
They dug tunnels large enough for an electric railroad to connect to a supply base over 150 miles away. The 2-mile-long complex, powered by a nuclear reactor, was large enough for 200 soldiers.
Moffat Tunnel is owned by the State of Colorado. It was initially operated by Union Pacific (UP) under a 99-year lease agreement. The use fee was $12,000 per year and was set to expire on January 6, 2025. [4] In late 2024, Colorado and UP negotiated a new lease for the tunnel with a 25-year term, to be initiated on May 1, 2025.