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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
DRAINAGE Iowa Poor 1900 126 232
DRAINAGE Iowa Poor 1900 126 232
DRY RUN CREEK Iowa Poor 1900 126 224
DRY RUN CREEK Iowa Fair 1900 126 750
DRY RUN CREEK Iowa Poor 1900 126 1,273
HURTZEL RUN Iowa Poor 1900 126 269
DRAINAGE Iowa Poor 1900 126 1,429
SMALL STREAM Iowa Fair 1900 126 1,290
BLOWERS CREEK Iowa Fair 1900 126 1,339
OTTER CREEK Iowa Fair 1900 126 1,042
DRAINAGE Iowa Poor 1900 126 37
STREAM Iowa Fair 1900 126 490
DRAINAGE DITCH Iowa Fair 1900 126 1,800
DRAINAGE DITCH Iowa Good 1900 126 1,460
THREE MILE CREEK Iowa Poor 1900 126 15
NODAWAY CREEK Iowa Poor 1900 126 35
RUTT BRANCH Iowa Poor 1900 126 35
MIDDLE RIVER Iowa Fair 1900 126 20
BRANCH MIDDLE RIVER Iowa Poor 1900 126 21
MIDDLE NODAWAY RIVER Iowa Poor 1900 126 21
CIPRA BRANCH Iowa Poor 1900 126 71
EAST NODAWAY RIVER Iowa Poor 1900 126 5
KEMP CREEK Iowa Poor 1900 126 5
EAST NODAWAY RIVER Iowa Poor 1900 126 11
BR SUTTLE CREEK Iowa Poor 1900 126 70
YELLOW RIVER Iowa Poor 1900 126 26
HICKORY CREEK Iowa Fair 1900 126 49
TEEPLE CREEK Iowa Poor 1900 126 60
VILLAGE CREEK Iowa Poor 1900 126 10
CLEAR CREEK Iowa Fair 1900 126 15
LONG BRANCH Iowa Poor 1900 126 26
PACKARD CREEK Iowa Poor 1900 126 16
SHOAL CREEK Iowa Poor 1900 126 11
STREAM Iowa Poor 1900 126 21
INDIAN CREEK Iowa Poor 1900 126 5
STREAM Iowa Fair 1900 126 51
STREAM Iowa Poor 1900 126 51
SMALL Iowa Fair 1900 126 26
STREAM Iowa Poor 1900 126 10
STREAM Iowa Poor 1900 126 21
STREAM Iowa Poor 1900 126 11
CREEK Iowa Fair 1900 126 11
BR PRAIRIE CK Iowa Poor 1900 126 29
BR MUD CK Iowa Poor 1900 126 20
PRAIRIE CREEK Iowa Poor 1900 126 80
WILD CAT CREEK Iowa Poor 1900 126 39
TRIB TO BLACK HAWK CREEK Iowa Poor 1900 126 177
INDIAN CREEK Iowa Poor 1900 126 26
PRESCOTTS CREEK Iowa Poor 1900 126 29
BIG CREEK Iowa Poor 1900 126 90

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