This bridge is one of the oldest bridges in Michigan, with a
construction date of 1880. This is also the last known remaining pin-connected queenpost truss bridge in Michigan,
and is forty feet in length. Clearly, this is a small bridge with great
importance. Unfortunately, the bridge sits severely rusted with so much growth
on it that it is not difficult to imagine the vines eventually collapsing the
bridge. Although the bridge is a privately owned structure today, the bridge however appears to be in its
original location, as an old alignment for DeWitt Road. Regardless of who owns
the bridge, funding from a government level should be made available to preserve
this last vestige of early metal truss bridge construction in Michigan.
This single-span wrought iron bridge crosses Stoney Creek on an abandoned
road segment in rural Olive Township. Spanning about 40 feet, the Stoney
Creek Bridge is a pin-connected Queenpost pony truss.
The queenpost's origins are ancient and obscure. Its symmetrical form
lent itself naturally to timber roof framing, where the truss was first
used in the Middle Ages. Early American carpenters constructed kingpost
and queenpost bridges at minor crossings throughout the eastern United
States. The technology for these two truss types spread to Michigan with
the pioneers in the 18th and 19th centuries. As a result, uncounted
timber kingposts and queenposts were built on the region's early roads.
The truss forms remained the same as their construction evolved from the
vernacular to the industrial in the 19th century, with the principal
changes involving materials used: timber/iron, iron, steel.
All-metal versions were marketed to the counties and townships by bridge
fabricators as inexpensive structure types for short-span applications.
This relatively narrow span range limited their use, however. As steel
beam bridges received widespread acceptance after the turn of the 20th
century, erection of kingpost and queenpost trusses declined
correspondingly. Kingposts were far more frequently employed than the
inherently longer queenposts.
The later truss type was superseded in its all-metal configuration by
the three-panel Pratt, which closely resembled he queenpost in all ways
except the composition of its verticals. Subsequent attrition has
eliminated all of Michigan's queenposts but this one diminutive span in
Clinton County. Apparently built in the 1880s, it is thus
technologically significant as the last example of its kind of what was
once a mainstay structural type. The Stoney Creek Bridge is today
distinguished as a well-preserved, early illustration of small-scale
wrought iron truss construction.
This single-span wrought iron bridge crosses Stoney
Creek on an abandoned road segment in rural Olive Township. Spanning
about 40 feet, the Stoney Creek Bridge is a pin-connected Queenpost pony
truss, with web members comprised as follows: upper chord and inclined
end post - two channels with cover and batten plates; lower chord and
vertical - two punched rectangular eyebars; and diagonal - two round
eyerods with turnbuckles. I-beam floor beams are hung from the lower
chord pins by U-bolts and support steel stringers, which carry a timber
deck. The truss is supported by concrete abutments with stone masonry
wingwalls. The bridge has been superseded by a concrete culvert and now
stands abandoned and in deteriorating condition. main span number: 1
main span length: 40.0 structure length: 42.0 roadway width: 16.0
structure width: 18.0
This bridge is tagged with the following special condition(s): Unorganized Photos
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