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Big Island Bridge

Sweetwater County, Wyoming
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Photos 

View Looking Northwest Toward South Web

Photo taken by Historic American Engineering Record

View photos at Library of Congress

Map 

Facts 

Overview
Lost Pratt through truss bridge over Green River on CR 4 (Big Island Road)
Location
Sweetwater County, Wyoming
Status
Replaced by new bridge
History
Built 1909-10
Builder
- Charles G. Sheely
Design
Two-span, pin-connected Pratt through truss
Dimensions
Length of largest span: 155.0 ft.
Total length: 310.0 ft.
Deck width: 12.5 ft.
Approximate latitude, longitude
+41.76432, -109.73527   (decimal degrees)
41°45'52" N, 109°44'07" W   (degrees°minutes'seconds")
Approximate UTM coordinates
12/605128/4624382 (zone/easting/northing)
USGS topographic map
Big Island Bridge
Inventory number
BH 44719 (Bridgehunter.com ID)

Categories 

8-panel truss (238)
Built 1910 (741)
Built during 1910s (6,729)
Charles G. Sheely (3)
HAER documented (782)
Lally columns (90)
Lost (10,368)
Pin-connected (1,521)
Pratt through truss (3,166)
 Pratt truss (5,660)
Replaced by new bridge (7,138)
Span length 125-175 feet (2,954)
Sweetwater County, Wyoming (9)
Through truss (9,210)
Total length 250-500 feet (3,371)
Truss (23,574)
Wyoming (181)

Update Log 

  • April 3, 2010: Added by James Baughn

Sources 

  • HAER WY-79 - Big Island Bridge, Spanning Green River on County Road No. 4, Green River vicinity, Sweetwater County, WY
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Comments 

Big Island Bridge
Posted March 12, 2011, by J.P.

I believe this bridge still exists via google earth