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Four Bears Bridge

Mountrail County, North Dakota, and McKenzie County, North Dakota
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Photos 

View at sunset

Photo taken August 1999 by Jason Smith

Map 

View Uglybridges.com report

Facts 

Overview
Lost cantilevered through and deck truss bridge over Lake Sakakawea (Missouri River) on ND 23 near New Town
Location
Mountrail County, North Dakota, and McKenzie County, North Dakota
Status
Replaced by modern concrete deck girder bridge
History
Built 1954; replaced 2005
Design
Cantilevered through truss
Dimensions
Length of largest span: 475.1 ft.
Total length: 4,483.2 ft. (0.8 mi.)
Deck width: 20.0 ft.
Vertical clearance above deck: 13.2 ft.
Approximate latitude, longitude
+47.98167, -102.55667   (decimal degrees)
47°58'54" N, 102°33'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
13/682320/5317151 (zone/easting/northing)
USGS topographic map
Sanish
Inventory numbers
ND 23-046-203 (North Dakota bridge number)
BH 23537 (Bridgehunter.com ID)
Inspection (as of 03/2008)
Superstructure condition rating: Excellent (9 out of 9)
Substructure condition rating: Excellent (9 out of 9)
Sufficiency rating: 79.0 (out of 100)
Average daily traffic (as of 2008)
5,070

Categories 

Built 1954 (229)
Built during 1950s (2,383)
Cantilevered (242)
Cantilevered truss (222)
Functionally obsolete (7,040)
Lost (10,374)
Lost 2005 (325)
Lost during 2000s (3,091)
McKenzie County, North Dakota (9)
Missouri River (95)
 Mountrail County, North Dakota (2)
Navigable waterway (1,449)
North Dakota (447)
Owned by state (9,811)
Replaced by new bridge (7,141)
Span length 250-500 feet (863)
Through truss (9,211)
Total length over 2500 feet (587)
Truss (23,575)

Update Log 

  • November 28, 2005: Posted photos from Jason Smith

Sources 

  • Jason Smith - JDSmith77 [at] gmx [dot] net
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Comments 

Four Bears Bridge
Posted November 26, 2008, by Ian Anderson (macsignals [at] gmail [dot] com)

A steel cantilever bridge replaced with a concrete segmental box-girder, which are built using cantilevers. Technology may live on but material choices don't!

Four Bears Bridge
Posted December 11, 2007, by wadizlle (wade [at] aol [dot] com)

hi

Four Bears Bridge
Posted September 28, 2007, by Blaine E (berikson [at] bis [dot] midco [dot] net)

Old and new

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Four Bears Bridge
Posted September 27, 2007, by Blaine E. (berikson [at] bis [dot] midco [dot] net)

The ols girl is gone. I'll miss her.

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