2 votes

Riddle Bridge


View To East

HAER photos taken Oct. 1986 by James Dale Roach

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #123745



Lost through truss bridge over Gasconade River on Holtsman Road beyond the end of Route Y
Pulaski County, Missouri
Replaced by modern bridge
Built 1911 by the Canton Bridge Co.; replaced ca. 1987
- Canton Bridge Co. of Canton, Ohio
Pin-connected, 12-panel Pennsylvania through truss
Length of largest span: 216.0 ft.
Total length: 296.0 ft.
Deck width: 13.8 ft.
Vertical clearance above deck: 12.9 ft.
Approximate latitude, longitude
+37.90885, -92.13215   (decimal degrees)
37°54'32" N, 92°07'56" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/576289/4196057 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 22372 (Bridgehunter.com ID)

Update Log 

  • August 24, 2019: New photos from Joe Sonderman
  • September 13, 2008: New photos from James Baughn
  • October 17, 2005: Posted photo of replacement bridge from Brandon Kempf


  • Brandon Kempf - gabbyportraits [at] earthlink [dot] net
  • HAER MO-28 - Riddle Bridge
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • Joe Sonderman


Riddle Bridge
Posted January 9, 2014, by Laura Huffman (laurah [at] pulaskicountyusa [dot] com)

Article from the 1986 edition of the Old Settlers Gazette


Riddle Bridge
Posted February 3, 2012, by John McCorkle (jmcc07 [at] yahoo [dot] com)

The musical duo, Brewer & Shipley, mostly known for their big 1971 hit "One Toke Over The Line," released an album in 1975 called Welcome To Riddle Bridge. The cover of the album is a drawing of Michael Brewer & Tom Shipley standing on what I assume is the bridge. On the inside paper sleeve is a photo of the wooden sign saying "Welcome to Riddle Bridge - Gasconade River - Public Fishing Access - Missouri Conservation Department"

Riddle Bridge
Posted March 16, 2008, by Thomas Long (thom50wl [at] sbcglobal [dot] net)

My grandparents farmed the Holtsman farm on either side of the bridge for many years. When driving a herd of cattle across the bridge, it would sway from side to side. For years it had only the horizontal planks for decking and when following another vehicle, one would see the heavy planks bouncing up and down. It was deemed so usafe, that children (my brother and I being two of them) on the west side of the river were bussed back to St. Robert, then east to highway 28, and back north to Dixon. Willie Alexander attempted to haul a load of cattle across it one time, resulting in the collapse of the western approach. I think it was at that time that the county decided to install parallel drive planks across the horizontal planks. For me, that old, rattley,rusted iron bridge will always be The Riddle Bridge.

Riddle Bridge
Posted June 14, 2006, by Ronny Riddle (rrdsprado [at] aol [dot] com)

The Riddle Bridge was named for the Riddle family of TN and MO who lived on a farm near the site. The Riddle Family Cemetery is located nearby. Thank you for making these pictures available.