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Susitna River Bridge
The Susitna River Bridge, also known as the Gold Creek Bridge, was the longest bridge span on the United States Government Railway in Alaska. The steel 504-ft. through-truss channel spans the Susitna River. It was completed in February, 1921. The crossing of the Susitna includes two 121-ft. combination Howe truss flanking spans and two 70-ft. combination pony Howe truss end spans, with 392 ft. of trestle at the southern approach and 28 ft. at the northern approach, making a total length of 1,322 ft. It is located 150 miles north of Anchorage, and 264 miles north of the terminus at Seward. The bridge was listed on the National Register of Historic Places in 1977. Study and design In a study of the river under summer and winter conditions as a preliminary to the design of the bridge, high-water marks and ice scars on trees indicated the elevation reached by the ice while in motion. The spring break-up occurs usually before the ice has become soft, and in passing downst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denali Highway
Denali Highway (Alaska Route 8) is a lightly traveled, mostly gravel highway in the U.S. state of Alaska. It leads from Paxson on the Richardson Highway to Cantwell on the Parks Highway. Opened in 1957, it was the first road access to Denali National Park. Since 1971, primary park access has been via the Parks Highway, which incorporated a section of the Denali Highway from Cantwell to the present-day park entrance. The Denali Highway is in length. Conditions The highway is now little used and poorly maintained, and closed to all traffic from October to mid-May each year. Whitfield, p. 399 Only the easternmost and westernmost are paved; whether the remainder should be paved as well is a continual source of debate. Washboarding and extreme dust are common, and the recommended speed limit is . Route description Traveling west, the Denali Highway leaves the Richardson Highway (Alaska Route 4) at Paxson, and climbs steeply up into the foothills of the central Alaska Range. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
