3 votes

Old Monroe Bridge


East side

Photo taken by James Baughn

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BH Photo #105984

Street View 


Three-span through truss bridge over Cuivre River on Main Street (Old MO 79) in Old Monroe
Old Monroe, Lincoln County, Missouri, and St. Charles County, Missouri
Closed to all traffic.
Built 1930
Three riveted, skewed, 8-panel Pratt through trusses
Length of largest span: 143.0 ft.
Total length: 526.8 ft.
Deck width: 20.3 ft.
Vertical clearance above deck: 15.5 ft.
Approximate latitude, longitude
+38.92871, -90.74601   (decimal degrees)
38°55'43" N, 90°44'46" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/695383/4311280 (zone/easting/northing)
Quadrangle map:
Land survey
Survey #1795 (T. 48 N., R. 2 E.)
Average daily traffic (as of 2017)
Inventory numbers
MO 057-321500.1 (Missouri off-system bridge number)
MONBI 21743 (Missouri bridge number on the National Bridge Inventory)
BH 21917 (Bridgehunter.com ID)
Inspection report (as of December 2018)
Overall condition: Poor
Superstructure condition rating: Critical (2 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 28.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • May 13, 2020: New photo from Darren T Snow
  • May 7, 2018: New photos from David Huffman
  • November 24, 2016: Updated by Chris Perry: Bridge is now closed to traffic
  • August 10, 2008: Bridge is open again
  • April 23, 2008: Updated by Max Johnson
  • June 6, 2005: Posted new photos


  • Greg Hall - cyclebay [at] aol [dot] com
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • Chris Perry
  • David Huffman
  • Darren T Snow


Old Monroe Bridge
Posted October 12, 2015, by Robert Brown (kansas57 [at] gmail [dot] com)

Th bridge has been closed to all vehicle traffic since early July 2015 following damage to the abutments caused by flooding on the Cuivre River. The water was touching the bottom of the bridge. You can still walk on it.

Old Monroe Bridge
Posted February 10, 2013, by JC

what can we do to save this historic structure.....Help us save our bridge

Old Monroe Bridge
Posted March 10, 2008, by GregP (lopull1 [at] aol [dot] com)

Bridge was closed to all traffic 03/09/2008.

Appears car accident on the North side of bridge severely damaged the guard rail leaving a large gap on that approach. From what I saw of most of the railing it wouldn't take much of an impact to just about tear the rail off clean. Most of the railing was barely attached because of rust damage. Bridge is in very poor shape.