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
WEST BR INDIAN CREEK Iowa Fair 1919 107 45
BALLARD CREEK Iowa Fair 1919 107 100
EAST BR INDIAN CREEKH Iowa Poor 1919 107 15
SKILLET CREEK Iowa Poor 1919 107 46
WEST BRANCH IOWA RIVER Iowa Poor 1919 107 11
DES MOINES RIVER Iowa Fair 1920 106 16,294
WILLOW CREEK Iowa Fair 1920 106 5,897
DRAINAGE Iowa Poor 1920 106 242
DRAINAGE Iowa Poor 1920 106 40
DRAINAGE Iowa Poor 1920 106 144
SMALL STREAM Iowa Poor 1920 106 349
DREYS DITCH Iowa Poor 1920 106 787
BREWER CREEK Iowa Fair 1920 106 377
EAST CEDAR CREEK Iowa Fair 1920 106 769
CEDAR RIVER Iowa Fair 1920 106 13,000
E BR WAPSINONOC CREEK Iowa Poor 1920 106 1,770
MIDDLE RIVER Iowa Fair 1920 106 30
MIDDLE NODAWAY RIVER Iowa Poor 1920 106 30
STREAM Iowa Fair 1920 106 11
CREEK Iowa Poor 1920 106 60
TRIB TO WAPSIPINICON RVR Iowa Fair 1920 106 49
BEAVER CREEK Iowa Fair 1920 106 139
BIG CREEK Iowa Fair 1920 106 71
BEAVER CREEK Iowa Poor 1920 106 26
BEAVER CREEK Iowa Poor 1920 106 20
BEAVER CREEK Iowa Poor 1920 106 20
IOWAY CREEK Iowa Poor 1920 106 20
BLUFF CREEK Iowa Poor 1920 106 30
BR RACCOON RIVER Iowa Poor 1920 106 20
WEST FORK CEDAR RIVER Iowa Poor 1920 106 79
INDIAN CREEK Iowa Poor 1920 106 26
ROCK RUN CR Iowa Poor 1920 106 50
BR ROCK CR Iowa Poor 1920 106 15
N PIERSON CREEK Iowa Poor 1920 106 20
GREY CREEK Iowa Poor 1920 106 45
PANTHER CREEK Iowa Poor 1920 106 10
ELK CREEK Iowa Poor 1920 106 25
STREAM Iowa Poor 1920 106 21
STREAM Iowa Poor 1920 106 11
COON CREEK Iowa Fair 1920 106 82
COX CREEK Iowa Poor 1920 106 30
HEWETT CREEK Iowa Poor 1920 106 51
STREAM Iowa Fair 1920 106 619
SM STREAM Iowa Poor 1920 106 11
BLOODY RUN Iowa Fair 1920 106 108
CREEK Iowa Fair 1920 106 21
BRANCH BEAVER CREEK Iowa Fair 1920 106 46
FROG CREEK Iowa Fair 1920 106 428
SOAP CREEK Iowa Poor 1920 106 110
JONATHAN CREEK Iowa Poor 1920 106 29

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.