Rating:
1 vote

Backbone Street Arch Bridge

Photos 

Backbone Street Bridge

Photo taken by Dave King

Enlarge

BH Photo #304853

Map 

Street View 

Facts 

Overview
Arch bridge over a Branch (Unnamed) of Maquoketa River on Backbone Street
Location
Backbone State Park, Delaware County, Iowa
Status
Open to traffic
History
Built 1935
Builder
- Civilian Conservation Corps
Design
Closed-spandrel arch
Dimensions
Length of largest span: 25.9 ft.
Total length: 31.2 ft.
Deck width: 20.0 ft.
Approximate latitude, longitude
+42.62145, -91.55694   (decimal degrees)
42°37'17" N, 91°33'25" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/618342/4719787 (zone/easting/northing)
Quadrangle map:
Dundee
Inventory numbers
IA 699020 (Iowa bridge number)
BH 13379 (Bridgehunter.com ID)
Inspection (as of 05/2014)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 90.0 (out of 100)

Update Log 

  • October 19, 2014: New photos from Dave King
  • October 13, 2013: New Street View added by Dave King
  • May 7, 2010: Updated by J.R. Manning: Tried to identify unnamed stream

Sources 

  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • Dave King - DKinghawkfan [at] hotmail [dot] com