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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
SLOUGH WATERWAY CREEK South Dakota Fair 1930 96 185
CREEK South Dakota Poor 1930 96 31
CREEK South Dakota Poor 1930 96 55
MUD CREEK South Dakota Fair 1930 96 55
CREEK South Dakota Poor 1930 96 100
DRAINAGE DITCH South Dakota Fair 1930 96 169
CREEK South Dakota Poor 1930 96 91
LANCE CK South Dakota Poor 1930 96 17
MEDICINE KNOLL CK South Dakota Fair 1930 96 150
DOG EAR CK South Dakota Poor 1930 96 55
DRAINAGE DITCH South Dakota Poor 1930 96 10
CAMP CK South Dakota Poor 1930 96 31
EAST BRULE CK South Dakota Fair 1930 96 45
CREEK South Dakota Poor 1930 96 183
MARNE CREEK South Dakota Poor 1930 96 10
CLAY CREEK South Dakota Poor 1930 96 50
CK South Dakota Poor 1930 96 16
CK South Dakota Poor 1931 95 60
CREEK South Dakota Fair 1931 95 640
CREEK South Dakota Fair 1931 95 60
CK South Dakota Fair 1931 95 52
CK South Dakota Fair 1931 95 137
CREEK South Dakota Fair 1931 95 25
CREEK South Dakota Fair 1931 95 271
SAND CREEK South Dakota Fair 1932 94 56
UNNAMED CREEK South Dakota Fair 1932 94 29
SHUE CREEK South Dakota Good 1932 94 56
CREEK South Dakota Poor 1932 94 11
CK South Dakota Poor 1932 94 27
CK South Dakota Poor 1932 94 37
FOOT CREEK South Dakota Poor 1932 94 35
CREEK South Dakota Fair 1932 94 98
N. BRANCH SPUR CK South Dakota Good 1932 94 21
CK South Dakota Fair 1932 94 21
CK South Dakota Good 1932 94 21
HAY CK South Dakota Fair 1932 94 21
CREEK South Dakota Fair 1932 94 39
DIRT LODGE CREEK South Dakota Poor 1932 94 30
CK South Dakota Poor 1932 94 70
FALL RV South Dakota Poor 1932 94 41
S FORK SNAKE CREEK South Dakota Poor 1932 94 50
INDIAN RV South Dakota Poor 1932 94 52
CK South Dakota Good 1932 94 36
PEARL CK South Dakota Poor 1932 94 43
LITTLE TURTLE CK South Dakota Good 1932 94 43
SAND CK South Dakota Poor 1932 94 37
CK South Dakota Poor 1932 94 220
CK South Dakota Fair 1932 94 220
MEDICINE CREEK South Dakota Fair 1932 94 60
CREEK South Dakota Fair 1932 94 15

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