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Historic Bridges: Boone County, Iowa

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Special Bridge Conditions Legend
! Confirmed demolition date within one year or an especially historic bridge that is threatened with demolition at any level.
X The bridge has been confirmed demolished or collapsed.
S The bridge has been dismantled or moved to an offsite location and is not currently available for public viewing.
L Most or all of the original bridge material has been demolished and replaced, including historically significant elements, but some original parts of the bridge remain.
Note: This website cannot guarantee the current condition of any bridge on this website. Bridges lacking these icons should not necessarily be considered condition-free.

Total Bridges Found: 3

 Bridge Name HSR Rating Facility Carried / Feature Intersected LocationStructure Type Structure DimensionsConstruction Date / Builder or Contractor DescriptionThumbnail
110th Street Bridge
Iowa Bridge Number 78120
Historic Significance Rating. 110th Street (U Avenue) Over Squaw Creek Rural: Boone County, Iowa Concrete Marsh Rainbow Through Arch, Fixed Total Length: 88 ft
Main Span Length: 60 ft
Roadway Width: 17.1 ft
Main Spans: 1
1918 By: Marsh Engineering Company of Des Moines, Iowa A beautiful and well-preserved example of a rare and significant Marsh rainbow arch bridge.Click to visit page.
L Avenue Bridge
Iowa Bridge Number 77840
Historic Significance Rating. L Avenue Over Railroad (Union Pacific) Rural: Boone County, Iowa Metal Rivet-Connected Double-Intersection Warren Pony Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed Total Length: 130 ft
Main Span Length: 47 ft
Roadway Width: 17.7 ft
Main Spans: 1
By: Unknown A noteworthy example of a railroad-designed highway over railroad truss bridge.Click to visit page.
Wagon Wheel Bridge
Iowa Bridge Number 77850
Historic Significance Rating. 200th Street Over Des Moines River Rural: Boone County, Iowa Metal 12 Panel Pin-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed Total Length: 703 ft
Main Span Length: 200 ft
Roadway Width: 16 ft
Main Spans: 4
1911 By: Iowa Bridge Company of Des Moines, Iowa This unique bridge is an extremely rare bridge that contains a variety of pin-connected through truss span designs.Click to visit page.

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