Dearborn River High Bridge

Photos 

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Photo taken by Historic American Engineering Record View photos at Library of Congress

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Photo taken by Historic American Engineering Record View photos at Library of Congress

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Photo taken by Historic American Engineering Record View photos at Library of Congress

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Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking Northeast, General Elevation Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking South, General Elevation Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking South, Elevation Showing Underside Of Deck Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking Northwest, 3/4 Elevation Showing Approach Girders Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking Southeast, 'Barrel Shot' Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Looking Southeast, Showing Lower Chord And North Pier Photo taken by Historic American Engineering Record View photos at Library of Congress

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Truss Seat At South Pier Photo taken by Historic American Engineering Record View photos at Library of Congress

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Detail View Of Pin Connection And Vertical Compression Member Photo taken by Historic American Engineering Record View photos at Library of Congress

Map 

Facts 

Overview

Deck truss bridge over Dearborn River on CR 300

Location

Lewis and Clark County, Montana

Status

Open to traffic

History

Built 1897 by the King Bridge Co.; rehabilitated 2003

Builder

- King Bridge Co. of Cleveland, Ohio

Design

Pratt half-deck truss

Dimensions

Length of largest span: 160.1 ft.
Total length: 251.0 ft.
Deck width: 16.1 ft.

Recognition

Eligible for the National Register of Historic Places

Approximate latitude, longitude

+47.28111, -112.39083   (decimal degrees)
47°16'52" N, 112°23'27" W   (degrees°minutes'seconds")

Approximate UTM coordinates

12/394817/5237341 (zone/easting/northing)

USGS topographic map

Bean Lake

Inventory number

BH 23071 (Bridgehunter.com ID)

Inspection (as of 11/2008)

Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Sufficiency rating: 32.8 (out of 100)

Average daily traffic (as of 2003)

100

Categories 

Update Log 

• July 22, 2008: New photos from James Baughn

Sources 

• HAER MT-23 - Dearborn River High Bridge, Spanning Dearborn River, Augusta vicinity, Lewis and Clark County, MT
• James Baughn - webmaster [at] bridgehunter [dot] com

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