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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 CHEYENNE RIVER South Dakota Poor 1935 91 20
TRIB TO COTTONWOOD CREEK South Dakota Fair 1935 91 19
TRIB TO COTTONWOOD CREEK South Dakota Fair 1935 91 19
CREEK South Dakota Fair 1935 91 34
CREEK South Dakota Poor 1935 91 35
JIM CREEK South Dakota Fair 1935 91 294
CREEK South Dakota Poor 1935 91 17
N. FORK WHETSTONE RV South Dakota Poor 1935 91 38
CK South Dakota Poor 1935 91 55
TURTLE CREEK South Dakota Poor 1935 91 22
MUD CREEK South Dakota Poor 1935 91 44
CREEK South Dakota Fair 1935 91 55
CREEK South Dakota Poor 1935 91 31
CREEK South Dakota Poor 1935 91 55
CREEK South Dakota Good 1935 91 50
CREEK South Dakota Poor 1935 91 34
TIMBER CREEK South Dakota Fair 1935 91 9
TIMBER CREEK South Dakota Poor 1935 91 9
TIMBER CREEK South Dakota Poor 1935 91 31
CREEK South Dakota Poor 1935 91 31
FORDHAM CREEK South Dakota Poor 1935 91 11
CREEK South Dakota Fair 1935 91 96
CREEK South Dakota Poor 1935 91 31
CREEK South Dakota Poor 1935 91 34
FORDHAM CREEK South Dakota Fair 1935 91 36
BR FOSTER CREEK South Dakota Poor 1935 91 31
CREEK South Dakota Poor 1935 91 31
ANTELOPE CK South Dakota Poor 1935 91 130
CK South Dakota Poor 1935 91 55
CK South Dakota Fair 1935 91 403
CK South Dakota Poor 1935 91 25
CK South Dakota Poor 1935 91 40
TRIB. TO JAMES RIVER South Dakota Fair 1935 91 100
MARNE CREEK South Dakota Poor 1935 91 33
BEAVER CK South Dakota Fair 1935 91 10
BEAR CK South Dakota Poor 1935 91 10
BIG SIOUX RIVER South Dakota Poor 1935 91 —
SLATE CR AT DAM South Dakota Good 1935 91 50
CK South Dakota Fair 1936 90 60
WEST FIRESTEEL CK South Dakota Poor 1936 90 62
SHUE CREEK South Dakota Poor 1936 90 56
SHUE CREEK South Dakota Poor 1936 90 60
EMANUEL CREEK South Dakota Fair 1936 90 127
SPUR CK South Dakota Fair 1936 90 21
PLATTE CREEK South Dakota Poor 1936 90 48
IRRIGATION DITCH South Dakota Good 1936 90 15
CREEK South Dakota Good 1936 90 36
INDIAN RIVER South Dakota Poor 1936 90 20
CK South Dakota Fair 1936 90 35
CK South Dakota Poor 1936 90 25

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