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BG&CM - Orofino Creek Bridge

Clearwater County, Idaho

Map 

Street View 

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, V38, 1897/07/08, p23+ & centerfold for background and drawings of this bridge. Also EN V38, 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)

Categories 

19th Century (6,784)
Bountiful Grain & Craig Mountain Railroad (7)
Built 1895 (251)
Built during 1890s (2,704)
Camas Prairie Railroad (12)
Clearwater County, Idaho (13)
Girder (8,940)
Great Northwest Railroad (5)
Have street view (24,983)
Idaho (415)
 Lattice Through/Plate Girder (12)
Milwaukee Bridge & Iron Works (30)
Northern Pacific Railroad (275)
Open (38,327)
Orofino, Idaho (2)
Owned by railroad (10,910)
Railroad (14,221)
Relocated (760)
Span length 100-125 feet (4,199)

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  • March 9, 2018: Updated by John C Stutz: Updated description, added historical references.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 

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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.