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Ottawa Street Bridge


Photo submitted by Andrea Wilkins

BH Photo #113233


Street View 


Pony truss bridge over Little Lost Creek on Ottawa Street in Seneca
Seneca, Newton County, Missouri
Replaced by a new bridge
Built by the Canton Bridge Co, Replaced 2008
- Canton Bridge Co. of Canton, Ohio
Pin-connected, half-hip Pratt pony truss
Length of largest span: 50.8 ft.
Total length: 51.8 ft.
Deck width: 20.0 ft.
Approximate latitude, longitude
+36.83901, -94.61309   (decimal degrees)
36°50'20" N, 94°36'47" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/356166/4078227 (zone/easting/northing)
Quadrangle map:
Land survey
T. 25 N., R. 34 W., Sec. 35
Average daily traffic (as of 2008)
Inventory numbers
MO 073-395500.2 (Missouri off-system bridge number)
MONBI 23203 (Missouri bridge number on the National Bridge Inventory)
BH 22172 (Bridgehunter.com ID)
Inspection report (as of January 2008)
Overall condition: Poor
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 39 (out of 100)
View more at BridgeReports.com

Update Log 

  • July 31, 2016: Updated by David Backlin: Updated status to Lost/Replaced
  • July 31, 2016: New Street View added by Dana and Kay Klein



Ottawa Street Bridge
Posted July 31, 2016, by Tony Dillon (spansaver [at] hotmail [dot] com)

You have a valid point Nathan... I must channel my inner-cynic and try to be more rational about these things! ;-)

Ottawa Street Bridge
Posted July 31, 2016, by Nathan Holth (webmaster [at] historicbridges [dot] org)

Tony, your understanding of reality is flawed. Preservation of historic metal truss bridges is not physically possible in some places... The laws of physics that apply in Indiana do not apply in some places such as Missouri and Pennsylvania. Engineers in these states make statements about feasibility of reuse and preservation of historic metal truss bridges that are in total contradiction to what has occurred in states like Indiana and Michigan. One can only conclude from such statements that the laws of physics differ from state to state.

Ottawa Street Bridge
Posted July 30, 2016, by Tony Dillon (spansaver [at] hotmail [dot] com)

I compare it to a crime when all of these beautiful and timeless structures are sitting around just waiting to be brought back to life! If using historic bridges for trails could become the norm, then more people would be able to appreciate the history of them...especially if they are properly signed!

Ottawa Street Bridge
Posted July 30, 2016, by Robert Elder (robertelder1 [at] gmail [dot] com)

This is why I cringe every time I am on a trail and I encounter a MOB. Using a MOB instead of a salvaged historic truss bridge further inhibits our ability as Bridgehunters to explain the historical significance of truss bridges and what they can tell us about American engineering.

Ottawa Street Bridge
Posted July 30, 2016, by Tony Dillon (spansaver [at] hotmail [dot] com)

They have a perfect little park right downstream in Seneca. Looks like they have a couple of nondescript pedestrian spans, but how much better would it have looked with this beautiful pony truss instead!

Ottawa Street Bridge
Posted July 30, 2016, by Robert Elder (robertelder1 [at] gmail [dot] com)

This one has been replaced. Unless it has been relocated, it is lost.

Ottawa Street Bridge
Posted April 23, 2007, by Nathan Holth (www [dot] historicbridges [dot] org)

Andrea Wilkins sent these photos of this Canton Bridge Company to me (www.historicbridges.org) of this half-hip Pratt pony truss with pinned connections and an unknown construction date. The plaque is mounted on top of the end post and has no date, but does credit the Canton Bridge Company. This bridge is slated for demolition and replacement. The structure is in a condition that would allow for an easy restoration. This bridge does not deserve to be demolished!

Webmaster's note: The photos that were here have been incorporated into the main site.