Natural Pier Bridge

47°00′50.1912″N 114°30′27.5112″W / 47.013942000°N 114.507642000°W / 47.013942000; -114.507642000CarriesMotor vehiclesCrossesClark Fork RiverLocalenear Alberton, MontanaCharacteristicsDesigntrussMaterialSteel, concrete, and woodTotal length374 feet (114 m)Width16 feet (4.9 m)Longest span175 feet (53 m)No. of spans2HistoryConstructed byLord Construction CompanyConstruction costUS$100,000StatisticsTollFree Locationnear Alberton, MontanaBuilt1917NRHP reference No.09001182Added to NRHPJanuary 4, 2010 Location

Natural Pier Bridge is a steel Warren through truss bridge spanning the Clark Fork river located 1 mile (1.6 km) west of Alberton, Montana, United States, which incorporates a natural rock outcrop as anchorage for a pier. It was nominated to the National Register of Historic Places as part of a related group of historic Montana bridges known as Montana's Historic Steel Truss Bridges and achieved listing on January 4, 2010. Built in 1917 by the Lord Construction Company of Missoula, Montana, it is one of only a few remaining bridges of its type in the state, and of those it is the only one that incorporates a natural feature in its design.^[1][2]

Notes

Bibliography

• "National Register Information System", National Register of Historic Places, National Park Service. Retrieved November 17, 2013.
• Axline, Jon; Montana Department of Transportation, "Montana's Historic Steel Truss Bridges - Natural Pier Bridge", Montana Memory Project, National Park Service. Retrieved November 17, 2013.