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Pleasant Ridge Road Bridge

Pleasant Ridge Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 2, 2016

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Key Facts

Facility Carried / Feature Intersected
Pleasant Ridge Road Over Cottonwood Creek
Location
Rural: Caldwell County, Missouri: United States
Construction Date and Builder / Engineer
1904 By Builder/Contractor: John H. Sparks of St. Joseph, Missouri

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
48 Feet (14.6 Meters)
Structure Length
48 Feet (14.6 Meters)
Roadway Width
13.7 Feet (4.18 Meters)
Spans
1 Main Span(s)
NBI Number
21634

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

View Missouri Historic Bridge Inventory Sheet For This Historic Bridge

This rare bedstead truss bridge was damaged and its top chord broken in half, yet it remained standing. The legs are not visible, but are presumably encased in the extant concrete abutments.

Above: Kids, don't try this at home! Driving a Ford Focus over a fracture critical bedstead truss bridge with a primary member (top chord) broken in two. The bridge did not collapse. This isn't actually a smart thing to do, but locals had moved the road closed signs and were clearly using the bridge, so this wasn't the first attempt. The author of this website decided to drive over this bridge to prove a point: Fracture critical bridges are not guaranteed to collapse even under load when a member fails. They might collapse, but its not guaranteed. Many engineers wrongly claim that a fracture critical bridge will (without exception) collapse when a single member fails. Long story short, historic metal truss bridges are not the deathtraps they are often made out to be.

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Photo Galleries and Videos: Pleasant Ridge Road Bridge

 
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Bridge Photo-Documentation
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A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: Pleasant Ridge Road Bridge

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