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Historic Bridges in Iowa

3,036 bridges built before 1951 in Iowa still in service today.

Bridges Built Before 1951

The United States has 3,036 bridges in Iowa built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
ALBERTSON CREEK Iowa Fair 1900 126 21
OVERFLOW Iowa Poor 1900 126 21
HEFFERMAN CREEK Iowa Poor 1900 126 11
HEFFERMAN CREEK Iowa Poor 1900 126 46
SMALL STREAM Iowa Poor 1900 126 21
LITTLE ROCK RIVER Iowa Poor 1900 126 71
ARGO SLOUGH Iowa Poor 1900 126 26
OVERFLOW Iowa Fair 1900 126 26
ARGO SLOUGH Iowa Poor 1900 126 46
TAFT CREEK Iowa Poor 1900 126 30
TAFT CREEK Iowa Poor 1900 126 26
EMERY CREEK Iowa Poor 1900 126 15
EMERY CREEK Iowa Poor 1900 126 35
MUD CREEK Iowa Poor 1900 126 46
SMALL STREAM Iowa Poor 1900 126 26
WILLOW CREEK Iowa Poor 1900 126 26
SMALL STREAM Iowa Poor 1900 126 62
PINNEY CREEK Iowa Poor 1900 126 62
KLONDIKE CREEK Iowa Poor 1900 126 41
KLONDIKE CREEK Iowa Poor 1900 126 41
SMALL STREAM Iowa Fair 1900 126 15
TOM CREEK Iowa Poor 1900 126 15
MOON CREEK Iowa Poor 1900 126 62
BLOOD RUN CREEK Iowa Poor 1900 126 90
N FORK CLANTON CREEK Iowa Poor 1900 126 15
DRAINAGE Iowa Poor 1900 126 15
CEDAR CREEK Iowa Fair 1900 126 5
CEDAR CREEK Iowa Fair 1900 126 20
DRAINAGE DITCH #2 Iowa Poor 1900 126 45
COAL CREEK Iowa Poor 1900 126 71
DRAINAGE DITCH #2 Iowa Poor 1900 126 11
DRAINAGE Iowa Poor 1900 126 5
STREAM Iowa Fair 1900 126 10
LOCAL STREAM Iowa Poor 1900 126 11
SOLDIER VALLEY D D Iowa Fair 1900 126 5
TRIB TO MAPLE RIVER Iowa Poor 1900 126 5
TRIB MAPLE RIVER Iowa Poor 1900 126 20
TRIB MAPLE RIVER Iowa Fair 1900 126 20
STREAM Iowa Poor 1900 126 60
PIKE CREEK Iowa Poor 1900 126 41
MURRAY CR Iowa Fair 1900 126 15
GINGER CR Iowa Poor 1900 126 15
BARRY CREEK Iowa Fair 1900 126 41
MUD CREEK Iowa Fair 1900 126 210
GRASS WATERWAY Iowa Fair 1900 126 26
WILLOW CREEK Iowa Poor 1900 126 11
FLOYD RIVER Iowa Poor 1900 126 26
WOLF CREEK Iowa Fair 1900 126 26
OCHEYEDAN RIVER Iowa Poor 1900 126 11
DRAINAGE Iowa Fair 1900 126 758

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats