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Black Diamond Road SW Bridge

Johnson County, Iowa

Photo 

Courtesy of the Cedar Rapids Gazette

View this photo at newspapers.com

BH Photo #487889

Map 

Facts 

Overview
Lost through truss bridge over Old Mans; Creek on Black Diamond Road SW
Location
Johnson County, Iowa
Status
Replaced by a new bridge
History
Built 1935; Replaced 2009
Builder
- Iowa State Highway Commission of Ames, Iowa
Design
Pratt through truss with riveted connections
Dimensions
Span length: 109.9 ft.
Total length: 109.9 ft.
Deck width: 18.0 ft.
Vertical clearance above deck: 11.2 ft.
Approximate latitude, longitude
+41.60298, -91.82984   (decimal degrees)
41°36'11" N, 91°49'47" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/597510/4606358 (zone/easting/northing)
Quadrangle map:
Amish
Land survey
T. 79 N., R. 8 W., Sec. 31
Inventory numbers
IA 204560 (Iowa bridge number)
BH 13762 (Bridgehunter.com ID)

Categories 

Black Diamond Trail (1)
Built 1935 (1,491)
Built during 1930s (12,198)
ISHC Standard Series T (198)
Iowa (6,811)
Iowa State Highway Commission (837)
Johnson County, Iowa (220)
Lost (29,049)
Lost 2009 (359)
Lost during 2000s (4,420)
 M-frame portal (88)
One-lane traffic (7,921)
Owned by county (21,656)
Pratt through truss (6,127)
Pratt truss (10,403)
Replaced by new bridge (19,749)
Span length 100-125 feet (4,573)
Through truss (17,185)
Total length 100-125 feet (5,415)
Truss (35,934)

Update Log 

  • December 30, 2020: New photo from Luke
  • February 6, 2012: Updated by Jason Smith: This bridge has been replaced

Sources 

  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Luke

Comments 

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