1 vote

Sturgeon River Bridge


Portal view of bridge

This bridge has rather long steel stringer approach spans on each side.

Photo taken by Matthew Lohry


BH Photo #156006



Twenty years ago, this type of Warren pony truss could be found at many, many river crossings in this part of St. Louis County. This bridge was built in 1927 at a time when lattice (or X-bracing) and V-lacing were regularly used in the built-up members of truss bridges, but this and many others like it in this area lacked both. This bridge's vertical truss members are composed of rolled I-beams rather than built-up members, and the diagonals are built up of angle iron connected with batten plates. Batten plates are also used under the upper chord, where V-lacing or X-bracing would normally be used. Nevertheless, this was a beautiful and low-maintenance bridge type and withstood the harshness of the elements and road conditions in this part of the state. This bridge has stood the test of time, as it still stands and carries Anton Road across the Sturgeon River.


Riveted Warren pony truss bridge over Sturgeon River on CR 492
St. Louis County, Minnesota
Demolished and replaced.
Built 1927
- American Bridge Co. of New York
Riveted Warren pony truss
Length of largest span: 60.0 ft.
Total length: 117.1 ft.
Deck width: 17.1 ft.
Also called
Anton Road Bridge
Approximate latitude, longitude
+47.76307, -92.88265   (decimal degrees)
47°45'47" N, 92°52'58" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/508793/5289974 (zone/easting/northing)
Quadrangle map:
Meadow Brook
Average daily traffic (as of 2003)
Inventory numbers
MN 7827 (Minnesota bridge number)
BH 20631 (Bridgehunter.com ID)
Inspection report (as of April 2011)
Overall condition: Poor
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 27.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • December 10, 2014: Updated by Nathan Holth: This bridge has been demolished and replaced.
  • January 30, 2012: Updated by J.P.: Added category "American Bridge Co. of New York"
  • January 30, 2012: Updated by Matt Lohry: Updated status: This bridge is now doomed.
  • February 22, 2010: Updated by Matthew Lohry: Updated information



Sturgeon River Bridge
Posted January 30, 2012, by Matt Lohry

Boy, I move to Florida, and St. Louis County, Minnesota, makes its move! This county definitely earns the not-so-spectacular toilet award here, as nearly ALL of its remaining pony truss bridges are in the process of being replaced, or are going to be in 2012. :'( Fortunately, though, its one remaining conventional through truss bridge is not on the 10-year list, but Foldesti (the ruthless county highway engineer) could change that at the drop of a hat. I'll try to update all that I know.