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When first visited in 2004, Macomb County has three highway truss bridges in this area: Card Road Bridge, 27 Mile Bridge, and 28 Mile Bridge. All three were pony trusses, and were closed to traffic. All three are in very poor condition and are in danger of collapsing. This is the 28 Mile Bridge. The Michigan Historic Bridge Inventory gives a date of 1928 for the construction of this bridge. By 2012, someone had cut the trusses off of this bridge. It is not known if this was done by scrap thieves or purposely by the county. The only reason this bridge's deck still crosses the water is because a long time ago someone added post tensioning rods under the deck, and these are sufficient to keep the deck from collapsing in the absence of load-bearing trusses.
The 28 Mile Bridge was a very simply designed truss bridge, but was nevertheless very interesting. No v-lacing was present on the bridge. The only built up beams on the bridge were diagonal and vertical members composed of paired angles with battens. The connections were riveted. The top chord was very unusual, since it was made of plain rolled i-beams, not built-up beams.
The condition of this bridge was very similar to the nearby 27 Mile Bridge. The 28 Mile Bridge had decayed severely, so bad that some members were missing, fallen off, or had so much complete section loss they looked like swiss cheese. If the bridge had not had the post-tensioning rods added, the bridge likely would have collapsed long ago. The trusses also moved independent of the deck if you pushed or leaned on them even slightly.
This bridge is tagged with the following special condition(s): Available
This historic bridge has been demolished. This map is shown for reference purposes only.
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