Natural Pier Bridge

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.

Natural Pier Bridge
Natural Pier Bridge, viewed from downstream.
Coordinates	47°00′50.1912″N 114°30′27.5112″W
Carries	Motor vehicles
Crosses	Clark Fork River
Locale	near Alberton, Montana
Characteristics
Design	truss
Material	Steel, concrete, and wood
Total length	374 feet (114 m)
Width	16 feet (4.9 m)
Longest span	175 feet (53 m)
No. of spans	2
History
Constructed by	Lord Construction Company
Construction cost	US$100,000
Statistics
Toll	Free
Natural Pier Bridge
U.S. National Register of Historic Places
Location of Natural Pier Bridge in Montana
Location	near Alberton, Montana
Built	1917
NRHP reference No.	09001182
Added to NRHP	January 4, 2010
Location

References

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.