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Old Hwy 431 (Flint River Relief Bridge-Southern Unit)


Photo taken by James McCray in March 2014


BH Photo #281003


Street View 


Concrete tee beam bridge over Flint River Relief on Old 431 Hwy
Madison County, Alabama
Open to traffic
Built 1925
Concrete tee beam
Length of largest span: 26.9 ft.
Total length: 292.0 ft.
Deck width: 18.0 ft.
Approximate latitude, longitude
+34.64828, -86.44535   (decimal degrees)
34°38'54" N, 86°26'43" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/550828/3834179 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 1992)
Inventory numbers
AL 314 (Alabama bridge number)
BH 60077 (Bridgehunter.com ID)
Inspection report (as of January 2018)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 68.8 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 30, 2014: New photos from James McCray
  • March 2, 2014: Added by James McCray


  • James McCray - jamesinslocomb [at] yahoo [dot] com


Confusion Regarding the Old 431 Flint River Relief Bridges
Posted March 2, 2014, by James McCray (jamesinslocomb [at] yahoo [dot] com)

There seems to be some confusion to the locations of the listed Flint River Relief Bridges on old US Hwy 431 south of Hunsville, AL. There are actually three relief bridges with three different lengths according to the NBI. However, when I was looking at the bridge listings, I noticed that one of the relief bridges was totally missing and its respective NBI posting was listed for the wrong bridge. This is totally understandable, due to the fact there are so many Flint River Relief Bridges and they all seem to share the same info. Two of the relief bridges I had to correct. The first one I had to add since it was the "missing" one (http://bridgehunter.com/al/madison/bh60077). This one has the length of 292' and is the longest of the three relief bridges. The listing that was posted for this bridge was for a bridge that is 89' in length and I made a request delete. The second relief bridge did not have a listing and I noticed that its respective NBI posting was actually the listing for the 89' bridge. I readded this bridge from the NBI. I, also, to make things easier, added the terms Southern Unit, Lower Northern Unit, and Upper Northern Unit to the bridges' names to make things easier. The third relief bridge listing was located in its correct spot so I did not do anything to this one except changed its name to "Upper Northern Unit."