Bridgehunter.com | BG&CM - Orofino Creek Bridge

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Description

This is a rare Northern Pacific designed shallow floor plate-lattice through girder of 1895. It was originally installed at Lighting Creek on the NP mainline at Clark Fork Idaho, and carried a cast plate identifying it as such, into the 1970s. Original Cooper engine rating was about E-30, but it may have been strengthened.

See Engineering News 1897/07/08, p23+ & centerfold for background and drawings. Also EN 1897/07/15, p45+ & centerfold for related designs.

Facts

Overview: Pony/through plate-lattice girder bridge over Orofino Creek on Railroad (BG&CM)
Location: Orofino, Clearwater County, Idaho
Status: Open to traffic
Builder: - Milwaukee Bridge & Iron Works of Milwaukee, Wisconsin
Railroads: - Bountiful Grain & Craig Mountain Railroad (BG&CM)
- Camas Prairie Railroad (CSP)
- Great Northwest Railroad (GRNW)
- Northern Pacific Railroad (NP)
Design: The original NP designed plate-lattice through girder span, combining plate girder construction at the ends, and a lattice girder in the center half.
Dimensions: Length of largest span: 100.0 ft.
Approximate latitude, longitude: +46.47673, -116.25397 (decimal degrees)
46°28'36" N, 116°15'14" W (degrees°minutes'seconds")
Approximate UTM coordinates: 11/557268/5147288 (zone/easting/northing)
Quadrangle map:: Orofino West
Inventory number: BH 56588 (Bridgehunter.com ID)

Update Log

March 10, 2018: Updated by Luke: Added builder
March 9, 2018: Updated by John C Stutz: Updated description, added historical references.
June 12, 2013: Added by Luke Harden

Sources

Luke
John C Stutz
The Engineering Record, Building Record and Sanitary Engineer, Volume 32 - Book

Comments

BG&CM - Orofino Creek Bridge

Posted March 10, 2018, by Anonymous

Volume numbers for those Engineering News articles? Google Books indexes them by volume.