Greycliff Bridge

Photos 

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Profile, Facing Northwest Photo taken by Historic American Engineering Record View photos at Library of Congress

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3/4 View, Facing Southwest Photo taken by Historic American Engineering Record View photos at Library of Congress

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Northeast Portal, Facing Southwest Photo taken by Historic American Engineering Record View photos at Library of Congress

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Southwest Portal, Facing Northeast Photo taken by Historic American Engineering Record View photos at Library of Congress

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View Between Trusses, Facing Southwest Photo taken by Historic American Engineering Record View photos at Library of Congress

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Detail Of Pin-Connection At Upper Chord, Facing North Photo taken by Historic American Engineering Record View photos at Library of Congress

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Detail Of Pin-Connection At Lower Chord, Facing West Photo taken by Historic American Engineering Record View photos at Library of Congress

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Detail Of Fixed End Of Truss At Abutment, Facing North Photo taken by Historic American Engineering Record View photos at Library of Congress

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Floor System, Facing West Photo taken by Historic American Engineering Record View photos at Library of Congress

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Detail Of Floor System, Facing South Photo taken by Historic American Engineering Record View photos at Library of Congress

Map 

Vicinity map Map links: Google Maps Yahoo! Maps TopoZone Terraserver USA

Facts 

Overview

Lost two-span through truss bridge over Yellowstone River on CR 001

Location

Sweet Grass County, Montana

Status

Replaced by new bridge

History

Built 1911 by the Security Bridge Co.; relocated here 1918; replaced 1991

Builder

- Security Bridge Co.

Design

Two pin-connected, 8-panel Camelback through trusses

Dimensions

Length of largest span: 170 ft.
Total length: 340 ft.
Deck width: 15 ft.
Vertical clearance above deck: 11.1 ft.

Approximate latitude, longitude

+45.76000, -109.77000   (decimal degrees)
45°45'36" N, 109°46'12" W   (degrees°minutes'seconds")

Approximate UTM coordinates

12/595652/5068118 (zone/easting/northing)

USGS topographic map

Greycliff

Inventory number

BH 37029 (Bridgehunter.com ID)

Inspection (as of 08/2006)

Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 97.7 (out of 100)

Average daily traffic (as of 2001)

100

Categories 

Update Log 

• August 2, 2008: Added by James Baughn

Sources 

• HAER MT-62 - Greycliff Bridge, Spanning Yellowstone River, 1/2 mile East Greyclif, Greycliff vicinity, Sweet Grass County, MT
• James Baughn - webmaster [at] bridgehunter [dot] com

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