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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
EAST FORK BATTLE CREEK Iowa Poor 1900 126 35
BACON CREEK Iowa Poor 1900 126 199
CREEK Iowa Poor 1900 126 50
SMALL Iowa Poor 1900 126 379
CREEK Iowa Poor 1900 126 26
MILLER CREEK Iowa Poor 1900 126 110
DEVILS RUN Iowa Poor 1900 126 —
CREEK Iowa Fair 1900 126 20
DRAINAGE Iowa Poor 1900 126 50
STREAM Iowa Poor 1900 126 30
CREEK Iowa Poor 1900 126 110
STREAM Iowa Fair 1900 126 460
DEER CREEK Iowa Poor 1900 126 35
STREAM Iowa Good 1900 126 51
SMALL Iowa Poor 1900 126 11
STREAM Iowa Fair 1900 126 260
SMALL STREAM Iowa Poor 1900 126 46
DRAINAGE Iowa Fair 1900 126 270
STREAM Iowa Fair 1900 126 35
STREAM Iowa Fair 1900 126 970
STREAM Iowa Fair 1900 126 60
STREAM Iowa Fair 1900 126 510
STREAM Iowa Fair 1900 126 340
HOOSIER CREEK Iowa Fair 1900 126 1,500
SMALL CREEK Iowa Fair 1900 126 135
E FORK DES MOINES RIVER Iowa Poor 1900 126 34
DD #185 Iowa Poor 1900 126 5
LITTLE SUGAR CREEK Iowa Poor 1900 126 20
BUFFALO CR Iowa Poor 1900 126 50
BUFFALO CR Iowa Poor 1900 126 15
LOST BRANCH CREEK Iowa Fair 1900 126 21
DR TO HONEY CREEK Iowa Poor 1900 126 5
WOLF CREEK Iowa Poor 1900 126 20
WEST RAT CREEK Iowa Fair 1900 126 34
RAT CREEK Iowa Fair 1900 126 50
RAT CREEK Iowa Poor 1900 126 21
ALLEN CREEK Iowa Poor 1900 126 26
OTTER CREEK Iowa Poor 1900 126 30
OVER FLOW Iowa Poor 1900 126 30
LITTLE OTTER CREEK Iowa Poor 1900 126 26
OVERFLOW Iowa Poor 1900 126 26
JOHNSON CREEK Iowa Poor 1900 126 5
EMERY CREEK Iowa Poor 1900 126 26
LITTLE ROCK RIVER Iowa Poor 1900 126 62
SMALL STREAM Iowa Poor 1900 126 41
MUD CREEK Iowa Fair 1900 126 49
ROCK RIVER Iowa Poor 1900 126 62
LIZARD CREEK Iowa Poor 1900 126 62
SIDE DITCH Iowa Poor 1900 126 10
ALBERTSON CREEK Iowa Poor 1900 126 41

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