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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
CK South Dakota Fair 1920 106 150
SOUTH CHAPELLE CK South Dakota Poor 1920 106 65
MEDICINE CREEK South Dakota Fair 1920 106 55
ROCK CK South Dakota Poor 1920 106 30
BROOKFIELD CREEK South Dakota Poor 1920 106 45
SAND CK South Dakota Poor 1920 106 35
WEST REDSTONE CK South Dakota Fair 1920 106 56
CK South Dakota Poor 1920 106 56
CK South Dakota Poor 1920 106 56
TURTLE CREEK South Dakota Poor 1920 106 55
CREEK South Dakota Fair 1920 106 31
CREEK South Dakota Fair 1920 106 31
COTTONWOOD CK South Dakota Fair 1920 106 50
PRAIRIE DOG CK South Dakota Poor 1920 106 50
LITTLE PRAIRIE DOG CK South Dakota Poor 1920 106 50
CK South Dakota Fair 1920 106 50
CK South Dakota Fair 1921 105 106
CK South Dakota Fair 1921 105 106
CREEK South Dakota Poor 1922 104 56
S. FORK OF PEARL CREEK South Dakota Poor 1922 104 56
WOLF CK South Dakota Poor 1922 104 10
TRIB TO BIG SIOUX RV South Dakota Poor 1922 104 994
BIG SIOUX RV South Dakota Poor 1922 104 100
NORTH BR TWELVE MILE CK South Dakota Fair 1923 103 85
CK South Dakota Fair 1923 103 265
CK South Dakota Fair 1924 102 101
CAIN CREEK South Dakota Poor 1924 102 56
CAIN CREEK South Dakota Poor 1924 102 56
CREEK South Dakota Poor 1924 102 213
RAVINE PARK LAKE South Dakota Poor 1924 102 56
SOUTH FORK PEARL CK South Dakota Poor 1924 102 56
PEARL CREEK South Dakota Poor 1924 102 56
DRY CHOTEAU CREEK South Dakota Poor 1924 102 60
TRIB. TO BOX ELDER CREEK South Dakota Fair 1924 102 1,552
TRIB BOX ELDER CK South Dakota Fair 1924 102 1,134
MOCASSIN CK South Dakota Poor 1924 102 20
WEST FIRESTEEL CK South Dakota Poor 1925 101 33
CREEK South Dakota Fair 1925 101 200
SAND CREEK South Dakota Fair 1925 101 162
BEAVER CREEK South Dakota Fair 1925 101 60
DAWSON CREEK South Dakota Poor 1925 101 56
BEAVER CREEK South Dakota Poor 1925 101 60
PRAIRIE CREEK South Dakota Poor 1925 101 60
NORTH DEER CK South Dakota Poor 1925 101 462
BR NORTH DEER CK South Dakota Poor 1925 101 1,163
CK South Dakota Poor 1925 101 1,305
ELM RIVER South Dakota Fair 1925 101 27
CREEK South Dakota Fair 1925 101 98
CREEK South Dakota Poor 1925 101 48
CHOTEAU CREEK South Dakota Fair 1925 101 48

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