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390th Street Bridge

Iowa Bridge Number 171030

390th Street Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 1, 2009

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Key Facts

Facility Carried / Feature Intersected
390th Street Over Squaw Creek
Rural: Hamilton County, Iowa: United States
Structure Type
Concrete T-Beam, Fixed
Construction Date and Builder / Engineer
1917 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
30 Feet (9.14 Meters)
Structure Length
65 Feet (19.81 Meters)
Roadway Width
18.4 Feet (5.61 Meters)
2 Main Span(s)
NBI Number

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge was documented by HistoricBridges.org not because it is individually unique or import, but because the bridge is an excellent, unaltered representative example of its type. With many larger and more significant historic bridges needing  documentation, HistoricBridges.org was not able to devote time to photographing many smaller bridges like this one. However, this bridge appears to be a good  example of its type and it likely represents a style of bridge that can be found elsewhere in the state. The bridge is a t-beam bridge built in 1917. In the late 1910s through perhaps the 1930s, t-beam bridges were commonly built for small crossings. A relatively mundane structure type, it is typically the presence of original railings which often are nicely detailed that make them stand out. This bridge includes original concrete paneled railings. Bridges such as this one remain important to review and consider for preservation because they represent a period in transportation history, and are more attractive visually than a modern bridge.


Photo Galleries and Videos: 390th Street Bridge

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