Captain William Moore Bridge
Historic bridge in Alaska, US / From Wikipedia, the free encyclopedia
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The Captain William Moore Bridge is an historic 300-foot (91 m) asymmetric single-pylon cable-stayed bridge on the Klondike Highway that spans the Moore Creek Gorge in the borough of Skagway, Alaska, United States, about 17 miles (27 km) north of the city of Skagway. Before the bridge was built in 1976, Whitehorse, Yukon, was only accessible from Skagway by the White Pass and Yukon Route railroad. The bridge connects Skagway to the Yukon highway network and allows traffic to pass over the Moore Creek Gorge, which flows along a fault line. To minimize bridge damage from earthquake movements along the fault line, the bridge was designed with anchors only at one end, which in this case was the south bank.[1] Over the decades, heavy ore truck traffic weakened the bridge. In 2019 a replacement buried bridge located 150 feet west of the historic bridge was opened, and the 1976 cable-stayed bridge was repurposed as a pedestrian viewpoint and wayside historic attraction.[2][3][4]
It's historic and beautiful, and is the only cantilevered cable-stayed bridge in Alaska...[5]
Captain William Moore Bridge | |
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Coordinates | 59°35′06.0″N 135°11′48.0″W |
Carries | Klondike Highway (AK 98) |
Crosses | William Moore Creek Gorge |
Locale | Skagway Municipality, Alaska |
Other name(s) | William Henry Moore Bridge |
Owner | State of Alaska Department of Transportation and Public Facilities |
Heritage status | first and only cantilever cable-stayed bridge in Alaska |
Characteristics | |
Design | asymmetric single-pylon cable-stayed bridge |
Material | Steel, concrete, timber deck |
Total length | 300-foot (91 m) |
Width | 35-foot (11 m) |
Height | 106-foot (32 m) pylon inclined forward over gorge 15° from the vertical |
Longest span | 270-foot (82 m) |
No. of spans | 2 = 30-foot (9.1 m) sidespan and 270-foot (82 m) mainspan |
Clearance above | 180-foot (55 m) above the creek |
History | |
Designer | State of Alaska Department of Transportation Bridge Design Section, 1974 |
Opened | 1976 |
Closed | 2019, repurposed as a wayside historic attraction and pedestrian viewpoint |
Statistics | |
Daily traffic | conventional, plus ore trucks up to 160,000 pounds from Yukon mines to Skagway |
Location | |