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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
TRIB. TO W BRULE CREEK South Dakota Fair 1940 86 45
TRIB. TO E BRULE CREEK South Dakota Poor 1940 86 41
TRIB. TO PATTEE CREEK South Dakota Poor 1940 86 35
TRIB. TO PATTEE CREEK South Dakota Poor 1940 86 50
CREEK South Dakota Fair 1940 86 25
CREEK South Dakota Poor 1940 86 10
LITTLE VERMILLION RIVER South Dakota Poor 1940 86 173
TRIB. TO E FORK VERM RV South Dakota Fair 1940 86 30
CROW CREEK South Dakota Poor 1940 86 51
CK South Dakota Fair 1940 86 15
SULPHUR CK South Dakota Fair 1940 86 17
CK South Dakota Poor 1940 86 61
WEST FORK VERMILLION RV South Dakota Poor 1940 86 40
WEST FORK VERMILLION RV South Dakota Fair 1940 86 40
COLTON CK South Dakota Poor 1940 86 70
TRIB TO SKUNK CK South Dakota Poor 1940 86 56
TRIB TO BIG SIOUX RV South Dakota Poor 1940 86 51
TRIB TO SLIP-UP CK South Dakota Fair 1940 86 27
WEST PIPESTONE CREEK South Dakota Poor 1940 86 76
WEST PIPESTONE CREEK South Dakota Fair 1940 86 548
WEST PIPESTONE CREEK South Dakota Poor 1940 86 71
FLANDREAU CREEK South Dakota Fair 1940 86 350
RAPID CK South Dakota Fair 1940 86 128
CASTLE CK South Dakota Fair 1940 86 128
TRIB TO BOX ELDER CK South Dakota Good 1940 86 475
CHEYENNE RV South Dakota Fair 1940 86 120
TRIB TO CHEYENNE RIVER South Dakota Fair 1940 86 15
STOCKDAM SPILLWAY South Dakota Fair 1940 86 6
CHEYENNE CK South Dakota Fair 1940 86 835
CK South Dakota Fair 1940 86 25
CREEK South Dakota Poor 1940 86 29
CREEK South Dakota Fair 1940 86 35
BNSF RAILROAD South Dakota Fair 1940 86 2,500
CREEK South Dakota Fair 1940 86 30
CREEK South Dakota Poor 1940 86 32
CREEK South Dakota Poor 1940 86 38
N. FORK WHETSTONE RV South Dakota Poor 1940 86 28
SAND CK South Dakota Poor 1940 86 70
DOVE CREEK South Dakota Fair 1940 86 55
CREEK South Dakota Poor 1940 86 50
CREEK South Dakota Fair 1940 86 31
CREEK South Dakota Fair 1940 86 31
TIMBER CREEK South Dakota Poor 1940 86 9
FORDHAM CREEK South Dakota Fair 1940 86 11
CREEK South Dakota Fair 1940 86 31
CREEK South Dakota Fair 1940 86 50
CREEK South Dakota Good 1940 86 96
CREEK South Dakota Fair 1940 86 12
CREEK South Dakota Poor 1940 86 33
DOG EAR CK South Dakota Poor 1940 86 50

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