Rating:
12908
{80}%
1 vote
J Avenue Overpass
Photos
Oblique View
From the northeast side.
Photo taken by J.R. Manning
BH Photo #109484
Description
Bridge is likely built using a former Chicago & North Western Railway span, which has been reconstructed for road use.
Facts
- Overview
- Pony truss bridge over Union Pacific Railroad on J Avenue
- Location
- Boone County, Iowa
- Status
- Open to traffic
- History
- Built 1900
- Railroads
- - Chicago & North Western Railway (CNW)
- Union Pacific Railroad (UP)
- Design
- Riveted double-intersection Warren pony truss
- Dimensions
-
Length of largest span: 69.9 ft.
Total length: 140.1 ft.
Deck width: 18.4 ft.
- Also called
- Hump Bridge
- Approximate latitude, longitude
- +42.05213, -93.98946 (decimal degrees)
42°03'08" N, 93°59'22" W (degrees°minutes'seconds")
- Approximate UTM coordinates
- 15/418121/4656038 (zone/easting/northing)
- Quadrangle map:
- Boone West
- Land survey
- T. 84 N., R. 27 W., Sec. 27
- Average daily traffic (as of 2007)
- 120
- Inventory numbers
- IA 77860 (Iowa bridge number)
BH 12908 (Bridgehunter.com ID)
- Inspection report (as of May 2009)
- Overall condition: Poor
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 14.6 (out of 100)
View more at BridgeReports.com
Update Log
- September 6, 2018: New photos from Daniel Barnes
- July 31, 2018: New photos from Daniel Barnes
- February 25, 2017: New photos from Daniel Barnes
- October 11, 2016: New photos from John Marvig
- June 2, 2015: New photos from Kevin Skow
- May 15, 2014: New photos from Lee Smith
- March 28, 2013: New photos from John Marvig
- September 2, 2011: Updated by Luke Harden: Added alternate name
- February 19, 2010: Updated by J.R. Manning: Updated Location
Sources
- J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
- Luke
- John Marvig - marvigj27 [at] gmail [dot] com
- Lee Smith - ljsmith_32 [at] hotmail [dot] com
- Kevin Skow - weatherbum [at] hotmail [dot] com
- Daniel Barnes
Union Pacific trains roar many times daily under this bridge at well over 50+ mph before crossing the new concrete Kate Shelley High Bridge completed East of this bridge. I believe that this bridge is sometimes referred to as the "Humpback Bridge".
Photo taken Winter 2013.