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Irigaray Bridge

Johnson County, Wyoming
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Photos 

side view

Photo taken by Historic American Engineering Record

View photos at Library of Congress

Map 

Facts 

Overview
Lost Pennsylvania through truss bridge over Powder River on Cnty Road 254
Location
Johnson County, Wyoming
Status
Replaced by new bridge
History
Built 1913; rehabilitated 1963; replaced in 1993
Builder
- Canton Bridge Co. of Canton, Ohio
Design
Parker through truss
Dimensions
Length of largest span: 200.1 ft.
Total length: 283.2 ft.
Deck width: 14.1 ft.
Approximate latitude, longitude
+43.93833, -106.15667   (decimal degrees)
43°56'18" N, 106°09'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
13/407169/4865673 (zone/easting/northing)
USGS topographic map
Hoe Ranch
Inventory numbers
WY EDZ (Wyoming bridge identifier)
BH 44708 (Bridgehunter.com ID)
Inspection (as of 11/1991)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Good (7 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 22.2 (out of 100)
Average daily traffic (as of 1989)
60

Categories 

Beam (6,154)
Built 1913 (515)
Built during 1910s (6,760)
Canton Bridge Co. (140)
Formerly NR-eligible (267)
Johnson County, Wyoming (8)
Lost (10,487)
Lost 1993 (381)
Lost during 1990s (3,227)
Owned by county (16,526)
 Pennsylvania truss (306)
Replaced by new bridge (7,211)
Span length 175-250 feet (1,489)
Steel stringer (2,379)
Structurally deficient (16,728)
Through truss (9,250)
Total length 250-500 feet (3,381)
Truss (23,609)
Wyoming (184)

Update Log 

  • April 2, 2010: Added by Jason Smith

Sources 

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

Irigaray Bridge
Posted March 12, 2011, by J.P.

also noticed that there is no new listing for this county road on the NBI for a new bridge in 2000 or this years. Could it possibly be closed to all traffic and preserved in place?

Irigaray Bridge
Posted April 3, 2010, by Anthony Dillon (spansaver [at] hotmail [dot] com)

I looked at a couple of different satellite images, which all show the bridge as being extant. And I'm sure these have all been taken since the 1993 date given for it's removal.

Irigaray Bridge Lost?
Posted April 2, 2010, by Craig Philpott (cphilpott [at] puc [dot] edu)

Jason, There is a Google Earth image dated Jul 7, 2007, for this location that indicates a single lane through truss bridge at this location. Impossible to tell if it the same bridge but the dimensions certainly match.