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IAIS 8th Street Bridge

Through Plate Girder Bridge over 8th Street
Altoona, Polk County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name IAIS 8th Street Bridge
Built By Chicago, Rock Island & Pacific Railroad
Contractor Iowa Bridge Company of Des Moines
Currently Owned By Iowa Interstate Railroad
Length 268 Feet Total, 64 Foot Main Spans
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Type Through Plate Girder and Steel Stringer
Substructure Type Concrete
Date Built 1955
Traffic Count 5 Trains/Day (Estimated)
Current Status In Use
Significance Minimal Significance
Documentation Date February 2020


Located in Altoona, this through girder bridge crosses 8th Street Southwest.
Built in 1955, the bridge features two main through girder spans, approached by a pair of steel stringer spans on either side. The entire bridge rests on concrete substructures.
At one time, there was a second bridge next to this bridge, but that has since been removed.
Overall, the bridge appears to still be in excellent condition.

The author has ranked this bridge as being minimally significant, due to the common design.
The photo above is an overview.

Citations

Source Type

Source

Build Date Newspaper Articles
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele