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
DES MOINES RIVER Iowa Fair 1948 78 730
BRANCH MIDDLE RIVER Iowa Poor 1948 78 15
FOX CREEK Iowa Poor 1948 78 51
STREAM Iowa Poor 1948 78 35
COOPER CREEK Iowa Poor 1948 78 120
STREAM Iowa Poor 1948 78 30
SMALL STREAM Iowa Fair 1948 78 70
CREEK Iowa Poor 1948 78 20
STEIN CK Iowa Poor 1948 78 15
SPRING CREEK Iowa Fair 1948 78 39
TRIB TO MILLER CREEK Iowa Good 1948 78 39
MUD CREEK Iowa Poor 1948 78 11
MILLER CREEK Iowa Fair 1948 78 5
TRIB TO BLACK HAWK CREEK Iowa Fair 1948 78 29
CRANE CREEK Iowa Poor 1948 78 49
CRANE CREEK Iowa Fair 1948 78 59
CRANE CREEK Iowa Fair 1948 78 29
TRIB TO CEDAR RIVER Iowa Fair 1948 78 29
BEAVER CREEK Iowa Fair 1948 78 279
TRIB. OF BEAVER CREEK Iowa Poor 1948 78 279
QUARTER SECTION RUN Iowa Poor 1948 78 1,188
CREEK Iowa Fair 1948 78 177
DD 20 Iowa Poor 1948 78 26
STALE BRANCH Iowa Fair 1948 78 5
COLD WATER CREEK Iowa Fair 1948 78 15
PERRY CREEK Iowa Poor 1948 78 11
PLUM CREEK Iowa Poor 1948 78 16
WILLOW CREEK Iowa Fair 1948 78 15
STREAM Iowa Fair 1948 78 47
BRANCH PANTHER CREEK Iowa Fair 1948 78 62
VESSER CREEK Iowa Fair 1948 78 150
HARDIN CREEK Iowa Fair 1948 78 35
SOUTH FORK BEAVER CREEK Iowa Poor 1948 78 44
BEAVER CREEK Iowa Poor 1948 78 11
MIDDLE FORK BEAVER CREEK Iowa Poor 1948 78 39
TROUBLESOME CREEK Iowa Poor 1948 78 40
BOONE RIVER Iowa Fair 1948 78 330
SMALL STREAM Iowa Fair 1948 78 40
DRAINAGE DITCH Iowa Poor 1948 78 15
DD Iowa Fair 1948 78 34
ROCK CREEK Iowa Poor 1948 78 35
PRAIRIE CREEK Iowa Poor 1948 78 73
S. SKUNK RIVER Iowa Poor 1948 78 60
SMALL STREAM Iowa Poor 1948 78 11
CREEK Iowa Fair 1948 78 25
STREAM Iowa Fair 1948 78 30
STREAM Iowa Fair 1948 78 20
STREAM Iowa Poor 1948 78 100
COAL CREEK Iowa Poor 1948 78 15
GRAPE CREEK Iowa Fair 1948 78 80

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.