1 vote

Lake Louise State Park Bridge


East portal

Photo taken in September 2010 by Jason Smith


BH Photo #177836




Through truss bridge over Little Iowa River on State Park Road
Mower County, Minnesota
Replaced by a truss bridge imported from Meeker County
Built 1910
Pin-connected Pratt through truss with A-frame portal bracing
Length of largest span: 77.1 ft.
Total length: 82.0 ft.
Deck width: 14.4 ft.
Vertical clearance above deck: 13.5 ft.
Approximate latitude, longitude
+43.53222, -92.51861   (decimal degrees)
43°31'56" N, 92°31'07" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/538896/4820032 (zone/easting/northing)
Quadrangle map:
Le Roy
Average daily traffic (as of 1986)
Inventory numbers
MN 6146 (Minnesota bridge number)
BH 20508 (Bridgehunter.com ID)
Inspection report (as of October 2009)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 16.7 (out of 100)
View more at BridgeReports.com


Built 1910 (1,136)
Built during 1910s (9,541)
Doomed (1,093)
Lost (24,080)
Lost 2013 (349)
Lost during 2010s (3,127)
Minnesota (1,499)
Mower County, Minnesota (15)
One-lane traffic (7,565)
Owned by state (15,754)
Park (271)
Pratt through truss (5,310)
Pratt truss (9,171)
Replaced by new bridge (16,071)
Span length 75-100 feet (6,385)
Structurally deficient (14,672)
Through truss (14,841)
Total length 75-100 feet (6,515)
Truss (32,426)

Update Log 

  • May 5, 2014: Updated by Jason Smith: This bridge has been replaced by a pony truss bridge originating from Meeker County.
  • July 9, 2011: New video from Benjamin Cole
  • September 18, 2010: Updated by Jason Smith: Added and changed some info on this bridge


  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Benjamin Cole - mountainjam99 [at] gmail [dot] com


Lake Louise State Park Bridge
Posted October 8, 2014, by Nathan Holth (webmaster [at] historicbridges [dot] org)

So they just scrapped out the old bridge? Thats great they were able to reuse the riveted truss, but the pin-connected truss should have been in turn relocated and reused in a different location, perhaps for pedestrian use.

Lake Louise State Park Bridge
Posted October 8, 2014, by Joe Fishbein (jmf [at] visi [dot] com)

The former Meeker County bridge 5388 has been installed at Lake Louise State Park, replacing the old pin-connected high truss. The new bridge number is R0529. Lower chords, floorbeams and stringers were replaced, upper steel blasted and painted and a new concrete deck installed. We inspected this bridge on 10/7/2014 and it looks to be in very good shape.

Lake Louise State Park Bridge
Posted January 28, 2011, by Matthew Lohry (matthewlohry [at] yahoo [dot] com)

I just noticed that this bridge is being replaced with another bridge relocated from Mower County. This is disappointing to me, because even though the bridge being brought in is historic, this one is far more so, in that it's older with design characteristics that were long gone by the time this bridge's replacement was built. Goes to show you that bridges located inside parks aren't safe either. It seems to me that this is a narrow one-lane road that will never see heavy truck traffic, and the current bridge would easily handle any traffic crossing even with just a light refurbishment and repainting. I was happy to see that the 1935 bridge was being preserved, but I'm certainly not happy to see that it is replacing another truss with far more historic value. The replacement bridge is a 1935 riveted polygonal Warren pony truss (see link below) that is two lanes wide and would be far more suited for restoration and use on a lightly traveled rural two-lane road. It is far more substantial than what is needed here, to say the least. This is a situation where both bridges could serve their justifiable purposes and be allowed to live on, but apparently not everyone thinks so.