Scenic Bridge
Scenic Bridge | |
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  Location within Montana  Location within the United States | |
| Location | Milepost 0 on Old U.S. Route 10 West, about 4 miles (6.4 km) east of Tarkio, Montana |
|---|---|
| Coordinates | 47°01′12.4″N 114°39′25.5″W / 47.020111°N 114.657083°W |
| Area | 2 acres (0.81 ha) |
| Built | 1928 |
| Built by | William P. Roscoe Company |
| Architectural style | Pratt deck truss |
| MPS | Montana's Historic Steel Truss Bridges |
| NRHP reference No. | 09001183[1] |
| Added to NRHP | January 4, 2010 |
The Scenic Bridge crossing Clark Fork River about 4 miles (6.4 km) east of Tarkio in Mineral County, Montana, was built in 1928. It is located at Milepost 0 on Old U.S. Route 10 West. The bridge has also been denoted 24MN304 and MDT No. L31012000+08.[2] It was listed on the National Register of Historic Places in 2010.[1]
The bridge is a riveted Pratt deck truss bridge. It has three main spans upon reinforced concrete abutments and piers. The bridge is 421 feet (128 m) long in total, with four 19-foot (5.8 m) approach spans, two 77-foot (23 m) deck truss spans, and a 191-foot (58 m) deck truss main span. It is 25 feet (7.6 m) wide, supporting a 24-foot (7.3 m) roadway.[2]
This Pratt deck truss design is visually pleasing and rare. It was chosen by state staff for relatively rare circumstances during 1928 to 1932, after which a version of a Warren truss design was used.[2]
See also
[edit]References
[edit]- 1 2 "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- 1 2 3 Jon Axline (May 13, 2009). "National Register of Historic Places Registration: Scenic Bridge / 24MN304, MDT No. L31012000+08". National Park Service. Retrieved September 6, 2017.
External links
[edit]- Historic American Engineering Record (HAER) No. MT-122, "Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral County, MT", 10 photos, 18 data pages, 91 photo caption pages
- Road bridges on the National Register of Historic Places in Montana
- Bridges completed in 1928
- Steel bridges in the United States
- Pratt truss bridges in the United States
- Historic American Engineering Record in Montana
- National Register of Historic Places in Mineral County, Montana
- Montana Registered Historic Place stubs