Carroll County Road 323 Bridge
Facts
- Overview
- Pony truss bridge over the BNSF Railway on CR 323
- Location
- Carroll County, Missouri
- Status
- Removed but not replaced
- History
- Built 1911
- Design
- Pin-connected, 5-panel Pratt pony truss
- Dimensions
-
Length of largest span: 80.0 ft.
Total length: 208.9 ft.
Deck width: 14.8 ft.
- Approximate latitude, longitude
- +39.45856, -93.34697 (decimal degrees)
39°27'31" N, 93°20'49" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 15/470150/4367722 (zone/easting/northing)
- Quadrangle map:
- Bosworth
- Land survey
- T. 54 N., R. 22 W., Sec. 27
- Average daily traffic (as of 2016)
- 35
- Inventory numbers
- MO 017-274000.1 (Missouri off-system bridge number)
MONBI 20766 (Missouri bridge number on the National Bridge Inventory)
BH 21134 (Bridgehunter.com ID) - Inspection report (as of January 2018)
- Overall condition: Poor
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 24.4 (out of 100)
View more at BridgeReports.com
Update Log
- January 5, 2021: New photo from Eric Kinkhorst
- December 22, 2020: Updated by Eric Kinkhorst: Bridge removed, approaches blocked off
- October 16, 2016: New photos from John Marvig
- October 5, 2009: New photos from James Baughn
Sources
- Missouri Historic Bridge Inventory
- James Baughn - webmaster [at] bridgehunter [dot] com
- John Marvig - marvigj27 [at] gmail [dot] com
- Eric Kinkhorst - erick [dot] bud [at] gmail [dot] com
Comments
Substructure does not appear original and construction date is suspect for alteration/relocation. That said, the riveted angles you note appear to be beam stiffeners, not hangers. Unless I missed something in your photo. My feelings is this is a railroad-designed highway over railroad bridge that may have been relocated/improved in 1911. But that's just based off cursory review of your photos as shown here.
Bridge looks to be a relocated lightweight railroad pony truss span, reused for road use. The evidence is in picture #24, where there are unused pieces of angle iron, which may have connected the former railroad stringers. The Santa Fe archives reports that this bridge received a completely new deck in 1929, so it is possible that the other railroad related components would have been removed then as well?
This page's URL is http://bridgehunter.com/mo/carroll/cr323/
Is BNSF expanding underneath this and the through truss? It seems odd that they removed both trusses in one year. I'm hoping thats not a bad sign for the other overpasses further east..