Rating:
2 votes

Kalispell Old Steel Bridge

Flathead County, Montana
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Photos 

Photo taken by Historic American Engineering Record

View photos at Library of Congress

Map 

View Uglybridges.com report

Facts 

Overview
Lost through truss bridge over Flathead River on CR 091 (Holt Stage Road)
Location
Flathead County, Montana
Status
Replaced by a new bridge
History
Built 1894; replaced 2009
Builder
- Gillette-Herzog Manufacturing Co. of Minneapolis, Minnesota
Design
One 11-panel Pratt through truss (220 ft.)
Two 7-panel Pratt through trusses (each 144 ft.)
Dimensions
Length of largest span: 220.2 ft.
Total length: 505.9 ft.
Deck width: 15.4 ft.
Vertical clearance above deck: 15.5 ft.
Approximate latitude, longitude
+48.21061, -114.25727   (decimal degrees)
48°12'38" N, 114°15'26" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/703752/5343346 (zone/easting/northing)
USGS topographic map
Kalispell
Inventory number
BH 23024 (Bridgehunter.com ID)

Categories 

11-panel truss (30)
19th Century (3,849)
Built 1894 (135)
Built during 1890s (1,560)
Flathead County, Montana (9)
Formerly NR-eligible (267)
Gillette-Herzog Manufacturing Co. (6)
HAER documented (784)
Lally columns (95)
Lost (10,484)
Lost 2009 (165)
Lost during 2000s (3,098)
 Montana (373)
One-lane traffic (7,119)
Owned by county (16,525)
Pin-connected (1,568)
Pratt through truss (3,184)
Pratt truss (5,687)
Replaced by new bridge (7,210)
Span length 175-250 feet (1,489)
Through truss (9,249)
Total length 500-1000 feet (1,818)
Truss (23,608)
Wooden deck (5,416)

Update Log 

  • February 14, 2012: Updated by Luke Harden: Corrected builder
  • November 23, 2011: Updated by James Baughn: It appears this bridge was replaced
  • July 22, 2008: New photos from James Baughn

Sources 

  • HAER MT-21 - Old Steel Bridge, Spanning Flathead River on Steel Bridge Road, Kalispell vicinity, Flathead County, MT
  • Luke Harden - lukemh9 [at] gmail [dot] com
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Comments 

Kalispell Old Steel Bridge
Posted November 24, 2011, by Tony Dillon (spansaver [at] hotmail [dot] com)

Unfortunate loss of what may have been the longest remaining Pratt through truss.

Kalispell Old Steel Bridge
Posted December 23, 2010, by Anthony Dillon (spansaver [at] hotmail [dot] com)

The main span of this bridge is quite massive with it's 20 foot panels. Comparing it with the regular sized Pratt spans it almost looks like a through truss with 2 pony approaches.