Dearborn River High Bridge
47.281111111111 - 112.39027777778Koordinaten: 47 ° 16 ' 52 "N, 112 ° 23' 25 " W
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The Dearborn River High Bridge is a built in 1897 Pratt truss bridge. The recorded in the National Register of Historic Places building was in early 2012 one of the few existing bridges of this type in the United States. She leads the Bean Lake Road (Montana Secondary Road 435) about 25 km southwest of Augusta, Montana, on the Dearborn River. The building is unusual because the road is the center of the timber and not as usually installed below or overhead. This unusual design of the Dearborn River High Bridge is well suited to carry light loads over deep cuts. The building has four spans and originally had a road made of wood planks. It is the last surviving affiliated with rivets parallel-chord truss bridge with roadway in central position in the entire United States. The construction costs amounted to $ 9,997 ( in today's prices: $ 301,000 ). Construction began in 1896 and was completed in 1897.
At this place was located in a long time a ford where the Indian tribes of the region, in particular the Piegan, crossed the river. Before the construction of the bridge for the position of Ponderay Crossing was known. The river was given in 1805 by Lewis and Clark named after the Secretary of War Henry Dearborn. The following five decades of the territory by the whites remained relatively unexplored.
2003, the bridge from the Montana Department of Transportation has been renewed. On 18 December the same year the bridge on the National Register of Historic Places was recorded.