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Zilwaukee Bridge - Old


Saginaw River Bridge


Photo taken by Douglas Butler in August 2014

License: Creative Commons Attribution (CC BY)


View this photo on Flickr

BH Photo #290803


Lost Deck girder bridge over Saginaw River on Interstate 75/U.S. 10/U.S. 23
Zilwaukee, Saginaw County, Michigan
Replaced by a new bridge
Built 1960; replaced 1987
Deck girder bascule
Also called
Saginaw River Bridge
Approximate latitude, longitude
+43.48190, -83.91243   (decimal degrees)
43°28'55" N, 83°54'45" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/264470/4818451 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 62347 (Bridgehunter.com ID)


Bascule (1,104)
Built 1960 (357)
Built during 1960s (2,170)
Deck girder (6,398)
Girder (11,344)
Interstate 75 (31)
Lost (29,920)
Lost 1987 (230)
Lost during 1980s (1,565)
Michigan (1,428)
Movable (3,156)
Owned by state (16,635)
Replaced by new bridge (20,352)
Saginaw County, Michigan (45)
US 10 (21)
US 23 (18)
Zilwaukee, Michigan (2)

Update Log 

  • July 9, 2019: New photo from Melissa Brand-Welch
  • November 13, 2018: New photo from Douglas Butler
  • October 6, 2018: New photos from Douglas Butler
  • August 6, 2014: New Street View added by Douglas Butler

Related Bridges 


  • Melissa Brand-Welch - melissabrandwelch [at] msn [dot] com
  • Douglas Butler
  • The Zilwaukee Bridge - Michigah Highways


Zilwaukee Bridge - Old
Posted December 22, 2019, by Mike Kerkau (mjkerkau [at] gmail [dot] com)

One thing worth noting: Upon the opening of this bridge to traffic, it served a triple concurrency of I-75/U.S. 23/U.S. 10. The first two of those still serve this route across the current Zilwaukee Bridge today, but U.S. 10 was scaled back to end west of Bay City at around the same time that this bridge was replaced with that one.


Zilwaukee Bridge - Old
Posted July 9, 2019, by Melissa Brand-Welch (melissabrandwelch [at] msn [dot] com)

I believe it was demolished in 1989. Still looking for information...

Zilwaukee Bridge - Old
Posted July 9, 2019, by Mike Kerkau (mjkerkau [at] gmail [dot] com)

"...and Bay City officials want to buy it, dismantle it and move it 7 1/2 miles north to replace bridge in city that collapsed in the 1950s. Moving the old bridge will save more than $1 million, they figure."

Ha! Now that is amazing. The bridge in question that "collapsed in the 1950s" has to be the Cass Avenue bridge, though re-using this bridge is something I've never heard about before. Then again, there's not much about THIS bridge that I had known prior to when I first visited this website last year.

Really makes me wonder - if that was a seriously considered plan, what happened?