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Pine River Bridge


Oblique View From Northeast Quadrant.

Photo provided by HistoricBridges.org, Copyright 2003, All Rights Reserved.

Photo taken by Nathan Holth in June 2003


BH Photo #523215

Street View 


Bridge over Pine River on South Riverside Avenue (M-29)
St Clair, St. Clair County, Michigan
Open to traffic
Built 1975
- Hazelet + Erdal of Chicago, Illinois (Design)
Deck girder bascule
Length of largest span: 80.1 ft.
Total length: 200.1 ft.
Deck width: 51.8 ft.
Approximate latitude, longitude
+42.81998, -82.48602   (decimal degrees)
42°49'12" N, 82°29'10" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/378522/4741895 (zone/easting/northing)
Quadrangle map:
St. Clair
Average daily traffic (as of 2007)
Inventory numbers
MINEW 09977 (Michigan bridge number on the National Bridge Inventory 2011 and later)
BH 62156 (Bridgehunter.com ID)
Inspection report (as of April 2018)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 61 (out of 100)
View more at BridgeReports.com

Update Log 

  • June 20, 2022: New photos from Nathan Holth
  • March 3, 2022: New photos from Nathan Holth
  • March 3, 2022: New photo from Douglas Butler
  • September 16, 2021: New photo from Douglas Butler
  • February 11, 2020: New photo from Douglas Butler
  • January 28, 2016: New Street View added by Douglas Butler
  • December 3, 2015: New Street View added by Douglas Butler
  • August 31, 2015: New Street View added by Douglas Butler
  • August 1, 2014: New Street View added by Douglas Butler



Pine River Bridge
Posted March 9, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)

The St. Clair Historical Commission had some good info on the bridge, taken from an out-of-print book: "St. Clair" by Charles Homberg published by the St. Clair Historical Commission in 2007. I am attaching the images he sent. We have what they report as an 1890s through truss swing (possibly a Smith Bridge Co. Bridge based on portal bracing) which was destroyed in an accident in 1896 and replaced by a similar through truss (or very aggressively repaired, but with different portal bracing). The through truss was replaced in 1930 with the deck plate girder swing bridge. Based on the photo they sent it appears to have used a rare MSHD railing design matching this bridge: https://historicbridges.org/bridges/browser/?bridgebrowser=m...

If someone wants to make separate pages feel free.

Pine River Bridge
Posted March 4, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)


Sorry for the confusion I actually spent a half hour transcribing text from the original plans for the bridge into the Description section and I see its gone this morning. I am not sure why, but BridgeHunter did not save my text so its all lost. I guess I should have saved it as a Word document backup. It didn't save the engineer either, so I re-added that. It seems to have "stuck" this time.

I don't have the time to type the history again, so I am going to attach the original plan sheet. If you look on the right side of the attached sheet in the notes section, you will find the very interesting description of the previous bridge (plate girder swing) and the temporary movable bridge's dimensions.

One good thing about going through this again is I caught an error I missed before... the correct the date for the bridge is actually 1975.

I actually was surprised that the previous bridge was a plate girder because I thought there had been a truss swing bridge, but I may have mixed this bridge up with Port Huron which once had three highway truss swing bridges. The Pine River is small, so a girder swing actually makes more sense. Have not found a photo of the swing (yet). Will keep an eye out.

Pine River Bridge
Posted March 3, 2022, by Douglas Butler (dbutler721992 [at] gmail [dot] com)


Was this modern bridge that replaced a gider swing bridge was the year of 1978 and what year was the temporary swing span was constructed?

Pine River Bridge
Posted March 3, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)


I actually grew up in St. Clair County so I know quite a bit about the bridges there. I dug through my archives and found a few photos of the bridge. I don't mind swapping the photos out with mine here, as this is a modern, non-historic bridge and therefore not featured on HistoricBridges.org.

I did pull an original plan sheet for this bridge to find the designer. I also found that the bridge replaced a plate girder swing bridge.

Also of interest, during construction, a temporary MOVABLE bridge was constructed, which you might be interested to know about (details added to description of this bridge). Exact design details of the temporary bridge design were not available to me (the uncomplete set of plans I have came from a rehab of the bridge)

Pine River Bridge
Posted March 3, 2022, by Douglas Butler


You are from Michigan, I'm sure you could take some pictures of this bridge, if I was to travel there in St Clair then I would take some pictures of the Scherzer type bridge or unless this bridge was demolished and replaced.

Pine River Bridge
Posted March 3, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)


Why is the photo from the Times Herald posted on this website? Further, why is it listed as Creative Commons? I checked the webpage you cited and at the bottom of the page it lists Copyright 2022, All Rights Reserved. That means photos are NOT licensed under Creative Commons, and should not be posted in the photo gallery. And posting copyrighted photos and listing them as Creative Commons is even worse because on top of that it sends the false message to website visitors that THEY can reuse the photo too.

Please review this page carefully to learn about what Creative Commons means: https://creativecommons.org/licenses/

A good place to get Creative Commons photos is Flickr, where you can search for images and filter them by license.