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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
CREEK Iowa Poor 1911 115 45
WEST BRANCH FLOYD RIVER Iowa Poor 1911 115 120
ROCK CREEK Iowa Poor 1911 115 20
WEST BR INDIAN CREEK Iowa Fair 1911 115 34
LONG DICK CREEK Iowa Fair 1911 115 80
LITTLE BEAR CREEK Iowa Poor 1912 114 340
CEDAR RIVER Iowa Poor 1912 114 1,610
MINERS CREEK Iowa Poor 1912 114 11
AMES CREEK Iowa Poor 1912 114 16
RACCOON RIVER Iowa Fair 1912 114 916
MINERVA CREEK Iowa Poor 1912 114 62
JORDAN CREEK Iowa Poor 1912 114 15
EAST BR INDIAN CREEK Iowa Fair 1912 114 80
TRIB DES MOINES R Iowa Poor 1912 114 26
BOONE RIVER Iowa Poor 1912 114 35
SIDE DITCH BRIDGE Iowa Poor 1912 114 10
EAST BOYER RIVER Iowa Poor 1913 113 303
FIELD STREAM Iowa Poor 1913 113 26
BEAVER DAM CREEK Iowa Poor 1913 113 15
CREEK Iowa Fair 1913 113 62
STREAM Iowa Poor 1913 113 5
PECK CREEK Iowa Poor 1913 113 113
NORTH CEDAR CREEK Iowa Poor 1913 113 5
FLOOD CREEK Iowa Poor 1913 113 44
DD Iowa Fair 1913 113 50
BNSF RR Iowa Poor 1913 113 15
MUD CREEK Iowa Poor 1913 113 79
KEIGLEY BRANCH Iowa Fair 1913 113 80
BRANCH IOWA RIVER Iowa Poor 1913 113 33
BUTTRICK CREEK Iowa Poor 1913 113 26
DRAINAGE DITCH NO. 3 Iowa Poor 1913 113 30
NORTH FORK YELLOW RIVER Iowa Fair 1913 113 29
CREEK Iowa Poor 1913 113 11
UPPER IOWA RIVER Iowa Poor 1913 113 39
WINNEBAGO RIVER Iowa Fair 1914 112 2,278
GLOVERS CREEK Iowa Poor 1914 112 719
SHERMANS CREEK Iowa Poor 1914 112 6,893
RACCOON RIVER Iowa Poor 1914 112 26
MAPLE RIVER Iowa Poor 1914 112 15
MIDDLE RACCOON RIVER Iowa Poor 1914 112 15
EAST SUGAR CREEK Iowa Poor 1914 112 20
WHARAM CREEK Iowa Fair 1914 112 21
WILLOW CREEK Iowa Fair 1914 112 275
SCHNEIDERS CREEK Iowa Poor 1914 112 10
NORTH WYACONDAH CREEK Iowa Poor 1914 112 34
E FORK DES MOINES RIVER Iowa Poor 1914 112 26
CREEK Iowa Fair 1914 112 45
VOLGA RIVER Iowa Poor 1914 112 33
LOST GROVE CREEK Iowa Poor 1914 112 21
BRANCH WOLF CREEK Iowa Poor 1914 112 5

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