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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
ROBERTS CREEK Iowa Poor 1917 109 16
SILVER CREEK (WEST) Iowa Good 1917 109 26
JIM CREEK Iowa Poor 1917 109 20
BRANCH PANTHER CREEK Iowa Fair 1917 109 41
UNAMED CR Iowa Poor 1917 109 20
OTTER CR Iowa Poor 1917 109 88
MINK CREEK Iowa Fair 1917 109 33
UNAMED CR Iowa Poor 1917 109 49
DIBBLE CREEK Iowa Poor 1917 109 20
QUINN CR Iowa Poor 1917 109 49
NUTTING CR Iowa Poor 1917 109 20
NUTTING CR Iowa Poor 1917 109 59
DRY BR CR Iowa Poor 1917 109 20
IOWAY CREEK Iowa Poor 1917 109 45
LOCAL STREAM Iowa Fair 1917 109 21
BRANCH SUGAR CREEK Iowa Poor 1917 109 21
SMALL STREAM Iowa Poor 1917 109 71
SMALL STREAM Iowa Poor 1917 109 51
BRUSH CREEK Iowa Poor 1917 109 16
BRUSH CREEK Iowa Poor 1917 109 47
SNIPE CREEK Iowa Poor 1917 109 35
CREEK Iowa Poor 1917 109 35
N SKUNK RIVER Iowa Poor 1917 109 49
N SKUNK RIVER Iowa Poor 1917 109 79
BURNETT CR Iowa Poor 1917 109 5
CREEK Iowa Poor 1917 109 108
MINERVA CR Iowa Poor 1917 109 21
BR MINERVA CR Iowa Poor 1917 109 15
N MINERVA CREEK Iowa Poor 1917 109 21
DD6 Iowa Poor 1917 109 11
DEEP CREEK Iowa Poor 1917 109 30
S LIZARD CREEK DD#22 Iowa Poor 1917 109 11
CROOKED CREEK Iowa Poor 1917 109 50
LITTLE CREEK Iowa Poor 1917 109 80
STREAM Iowa Poor 1917 109 30
INDIAN CREEK Iowa Fair 1917 109 20
SMALL STREAM Iowa Fair 1917 109 26
MOSQUITO CREEK Iowa Poor 1917 109 35
SMALL STREAM Iowa Poor 1917 109 30
KEIGLEY BRANCH Iowa Fair 1917 109 20
SMALL STREAM Iowa Poor 1917 109 11
WHISKEY CREEK Iowa Poor 1917 109 60
SMALL STREAM Iowa Poor 1917 109 50
SHELLROCK RIVER TRIB Iowa Fair 1917 109 35
OSCAR CREEK Iowa Poor 1917 109 640
DES MOINES RIVER Iowa Fair 1918 108 9,112
SMALL STREAM Iowa Poor 1918 108 15
CREEK Iowa Fair 1918 108 245
RED OAK CREEK Iowa Fair 1918 108 4,460
DRAINAGE DITCH Iowa Fair 1918 108 2,040

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