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Historic Bridges in South Dakota

1,118 bridges built before 1951 in South Dakota still in service today.

Bridges Built Before 1951

The United States has 1,118 bridges in South Dakota 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
SAND CREEK South Dakota Fair 1900 126 156
PEARL CREEK South Dakota Fair 1900 126 103
BIG SIOUX RV South Dakota Poor 1900 126 63
JAMES RIVER South Dakota Poor 1900 126 98
CLAY CK DITCH South Dakota Poor 1900 126 97
DRY CHOTEAU CREEK South Dakota Fair 1901 125 60
CK South Dakota Fair 1901 125 35
CK South Dakota Poor 1901 125 25
SPEARFISH CK South Dakota Poor 1901 125 50
ROCK CK South Dakota Poor 1901 125 75
CREEK South Dakota Poor 1901 125 50
TURTLE CK South Dakota Poor 1903 123 31
JAMES RIVER South Dakota Poor 1904 122 35
CHOTEAU CREAK South Dakota Poor 1905 121 50
EMANUEL CREEK South Dakota Poor 1905 121 20
PRAIRIE CREEK South Dakota Poor 1905 121 60
CK South Dakota Fair 1905 121 56
Inlet Canal South Dakota Good 1906 120 1
Crow Creek Wasteway South Dakota Fair 1907 119 1
BIG SIOUX RV South Dakota Poor 1907 119 92
COBB CK South Dakota Poor 1908 118 25
SPLIT ROCK CK South Dakota Poor 1908 118 35
TURTLE CREEK South Dakota Poor 1908 118 55
VERMILLION RV South Dakota Poor 1909 117 15
CREEK South Dakota Poor 1909 117 85
TURTLE CREEK South Dakota Poor 1909 117 126
SNATCH CREEK South Dakota Poor 1910 116 60
MEDARY CK South Dakota Poor 1910 116 92
CK South Dakota Fair 1910 116 62
VERMILLION RV South Dakota Poor 1910 116 40
WILLOW CK South Dakota Poor 1910 116 73
FIRESTEEL CK South Dakota Poor 1910 116 390
STRAY HORSE CK South Dakota Poor 1910 116 5
CK South Dakota Poor 1910 116 43
CK South Dakota Fair 1910 116 15
REE CK South Dakota Poor 1910 116 43
WOLF CK South Dakota Poor 1910 116 10
ROCK CK South Dakota Poor 1910 116 5
ROCK CK South Dakota Poor 1910 116 5
JAMES RIVER South Dakota Poor 1910 116 31
FOSTER CREEK South Dakota Poor 1910 116 50
TURKEY RIDGE CK South Dakota Poor 1910 116 5
EAST FORK VERMILLION RV South Dakota Poor 1910 116 30
VERMILLION RV South Dakota Poor 1910 116 50
PEARL CK South Dakota Poor 1911 115 56
SHUE CK South Dakota Poor 1912 114 56
CHOTEAU CREEK South Dakota Poor 1912 114 60
CREEK South Dakota Poor 1912 114 48
CK South Dakota Poor 1912 114 20
BIG SIOUX RIVER South Dakota Fair 1912 114 7,100

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