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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 Poor 1940 86 50
CK South Dakota Poor 1940 86 50
VERMILLION RV South Dakota Poor 1940 86 65
DRAINAGE DITCH South Dakota Fair 1940 86 50
BRULE CK South Dakota Fair 1940 86 75
CK South Dakota Fair 1940 86 35
LEWIS DITCH South Dakota Poor 1940 86 40
CK South Dakota Poor 1940 86 45
CK South Dakota Fair 1940 86 100
BEAVER CREEK South Dakota Fair 1940 86 125
BEAVER CREEK South Dakota Fair 1940 86 150
TRIB. TO CLAY CREEK South Dakota Poor 1940 86 25
UNNAMED CREEK South Dakota Fair 1940 86 50
TURKEY CREEK South Dakota Fair 1940 86 5
UNNAMED CREEK South Dakota Poor 1940 86 45
TRIB. TO TURKEY CREEK South Dakota Poor 1940 86 5
SD ROUTE 87 South Dakota Fair 1940 86 326
SOUTH FORK PLATTE CREEK South Dakota Good 1941 85 40
SHUE CREEK South Dakota Fair 1941 85 227
DEADMAN CREEK South Dakota Fair 1941 85 25
DEADMAN CREEK South Dakota Fair 1941 85 25
CK South Dakota Poor 1941 85 92
GARDEN CK South Dakota Fair 1941 85 556
CK South Dakota Poor 1941 85 48
MOSQUITO CK South Dakota Poor 1941 85 48
CK South Dakota Fair 1941 85 73
CK South Dakota Fair 1941 85 1,576
CK South Dakota Fair 1941 85 1,576
CK South Dakota Good 1941 85 77
CREEK South Dakota Fair 1941 85 36
CK South Dakota Fair 1941 85 130
CK South Dakota Poor 1941 85 30
LAKE MARSH INLET South Dakota Fair 1941 85 261
PONY CK South Dakota Good 1941 85 25
PONY CK South Dakota Poor 1941 85 51
DRY CK South Dakota Poor 1941 85 69
JAMES RV South Dakota Fair 1941 85 145
BR MEDICINE CK South Dakota Fair 1941 85 251
MEDICINE CK South Dakota Fair 1941 85 251
MEDICINE CK South Dakota Fair 1941 85 251
MEDICINE CK South Dakota Fair 1941 85 251
BATTLE CK South Dakota Fair 1941 85 91
BATTLE CK South Dakota Fair 1941 85 265
BATTLE CK South Dakota Fair 1941 85 183
BLIND CREEK South Dakota Poor 1941 85 80
TRIB. TO FINNIE CREEK South Dakota Poor 1941 85 50
MEDICINE CK South Dakota Fair 1941 85 251
CREEK South Dakota Fair 1941 85 5,850
CREEK South Dakota Fair 1941 85 5,850
CREEK South Dakota Good 1941 85 5,850

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