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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
TIMBER CREEK South Dakota Poor 1932 94 55
CREEK South Dakota Fair 1932 94 50
COTTONWOOD CK South Dakota Good 1932 94 34
CK South Dakota Fair 1933 93 1,120
SOUTH FORK YELLOW BANK R South Dakota Fair 1933 93 25
SOUTH FORK PEARL CK South Dakota Poor 1933 93 913
SPRING CK South Dakota Fair 1933 93 188
CREEK South Dakota Fair 1933 93 50
CK South Dakota Fair 1934 92 117
CREEK South Dakota Poor 1934 92 20
CREEK South Dakota Fair 1934 92 69
FALL RV South Dakota Poor 1934 92 588
BRYANT CREEK South Dakota Poor 1934 92 55
DOVE CREEK South Dakota Fair 1934 92 38
NORTH MEDICINE CK South Dakota Poor 1934 92 33
COFFEE CK South Dakota Fair 1934 92 257
SOUTH MEDICINE CK South Dakota Poor 1934 92 31
UNNAMED CK South Dakota Fair 1934 92 11
MILLER CK South Dakota Poor 1934 92 2,000
SPAIN DITCH South Dakota Fair 1934 92 103
BIG SIOUX RIVER South Dakota Fair 1934 92 10,900
TRIB TO BEAVER CK South Dakota Fair 1934 92 112
CREEK South Dakota Poor 1934 92 50
CREEK South Dakota Fair 1934 92 48
ELCE CK South Dakota Poor 1934 92 35
HIDDENWOOD CREEK South Dakota Fair 1934 92 52
HIDDENWOOD CREEK South Dakota Fair 1934 92 52
WHITE RIVER South Dakota Poor 1935 91 10
CK South Dakota Good 1935 91 65
CK South Dakota Fair 1935 91 65
CREEK South Dakota Poor 1935 91 56
SAND CREEK South Dakota Fair 1935 91 56
CAIN CREEK South Dakota Fair 1935 91 2,600
MIDDLE PEARL CREEK South Dakota Fair 1935 91 170
CREEK South Dakota Poor 1935 91 120
S. FORK OF PEARL CREEK South Dakota Poor 1935 91 120
TRIB. TO CHOTEAU CREEK South Dakota Poor 1935 91 60
TRIB. TO CHOTEAU CREEK South Dakota Poor 1935 91 115
TRIB. TO EMANUEL CREEK South Dakota Poor 1935 91 60
CK South Dakota Fair 1935 91 714
CREEK South Dakota Fair 1935 91 100
CREEK South Dakota Good 1935 91 132
CHARLEY CREEK South Dakota Fair 1935 91 60
BEAVER CREEK South Dakota Fair 1935 91 60
CREEK South Dakota Fair 1935 91 60
BEAVER CREEK South Dakota Fair 1935 91 60
BEAVER CREEK South Dakota Fair 1935 91 150
BEAVER CREEK South Dakota Fair 1935 91 60
CK South Dakota Poor 1935 91 597
ELM LAKE South Dakota Poor 1935 91 33

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