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Prairie River M-86 Bridge


Prairie River M-86 Bridge

Photo from Michigan DOT

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

View this photo at michigan.gov

BH Photo #478811

Historical Street View: October 2015 

By Google


Pony truss bridge over Prairie River on M-86
St. Joseph County, Michigan
Relocated to Cass County and replaced in 2018
Built 1923 on Telegraph Road over the River Rouge in Wayne County; relocated to M-86 in 1938 by L.W. Lamb as a Public Works Administration project; relocated 2018 to Crystal Springs Street in Cass County
- L.W. Lamb of Jackson, Michigan (contractor for 1938 reloction)
- Public Works Administration (relocation to this site)
Parker pony truss
Span length: 89.9 ft.
Total length: 89.9 ft.
Deck width: 26.9 ft.
Posted to the National Register of Historic Places on February 4, 2000
Approximate latitude, longitude
+41.91889, -85.48167   (decimal degrees)
41°55'08" N, 85°28'54" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/625905/4641885 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2015)
Inventory numbers
NRHP 00000044 (National Register of Historic Places reference number)
MINBI 78178061000B030 (Michigan bridge number on the National Bridge Inventory 2010 and before)
MINEW 10283 (Michigan bridge number on the National Bridge Inventory 2011 and later)
BH 20250 (Bridgehunter.com ID)
Inspection report (as of September 2017)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Excellent (9 out of 9)
Deck condition rating: Excellent (9 out of 9)
Sufficiency rating: 99.3 (out of 100)
View more at BridgeReports.com

Update Log 

  • February 11, 2022: Essay added by Mike Kerkau
  • February 11, 2022: Updated by Paul Plassman: Added 1938 contractor
  • August 12, 2020: New photos from Geoff Hubbs
  • September 20, 2018: Updated by Mike Kerkau: Bridge has been moved to a new location in Cass County
  • December 20, 2010: New Street View added by Matthew Lohry

Related Bridges 



Prairie River M-86 Bridge
Posted September 20, 2018, by Mike Kerkau (mjkerkau [at] gmail [dot] com)

Page for the bridge in its new location: http://bridgehunter.com/mi/cass/bh82914/