Bridgehunter.com | Bridge 4759

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Photos

Photo taken by Historic American Engineering Record

Overview: Lost Polygonal Warren pony truss bridge over Cannon River on MN Hwy. 20
Location: Cannon Falls, Goodhue County, Minnesota
Status: Replaced by new bridge
History: Built 1928 By Guaranty Construction Company Minneapolis, MN; replaced 1995
Builder: - Guaranty Construction Co. of Minneapolis, Minnesota
Design: Riveted Polygonal Warren pony truss bridge
Dimensions: Length of largest span: 80.1 ft.
Total length: 245.1 ft.
Deck width: 30.2 ft.
Approximate latitude, longitude: +44.51219, -92.90658 (decimal degrees)
44°30'44" N, 92°54'24" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/507424/4928768 (zone/easting/northing)
USGS topographic map: Cannon Falls
Inventory numbers: MN 4759 (Minnesota bridge number)
BH 43880 (Bridgehunter.com ID)
Inspection (as of 10/1990): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 26.2 (out of 100)
Average daily traffic (as of 1990): 7,000

September 22, 2010: Updated by Matthew Lohry: Updated GPS Coordinates and corrected highway number--this bridge carried MN 20 rather than MN 19.
January 13, 2010: New photos from Jason Smith
January 12, 2010: Added by Jason Smith

Jason Smith - JDSmith77 [at] gmx [dot] net
HAER MN-85 - Bridge 4759, Carrying Trunk Highway 20 over Cannon River, Cannon Falls, Goodhue County, MN
Matt Lohry