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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 1930 96 381
CK South Dakota Poor 1930 96 25
W BR LAC QUI PARLE RIVER South Dakota Poor 1930 96 50
CHEYENNE RV South Dakota Poor 1930 96 41
ANTELOPE HOLLOW CK South Dakota Fair 1930 96 100
S FORK SNAKE CREEK South Dakota Poor 1930 96 60
CREEK South Dakota Fair 1930 96 77
S FORK SNAKE CREEK South Dakota Poor 1930 96 38
S FORK SNAKE CREEK South Dakota Poor 1930 96 36
BIG SIOUX RV South Dakota Poor 1930 96 52
CK South Dakota Poor 1930 96 54
CK South Dakota Poor 1930 96 25
CK South Dakota Fair 1930 96 52
CK South Dakota Poor 1930 96 27
SOUTH FORK YELLOW BANK R South Dakota Poor 1930 96 98
CK South Dakota Poor 1930 96 40
CK South Dakota Fair 1930 96 336
CK South Dakota Fair 1930 96 290
NORTH FORK YELLOW BANK R South Dakota Poor 1930 96 35
WILLOW CK South Dakota Fair 1930 96 36
CHEYENNE RV South Dakota Poor 1930 96 45
GRINDSTONE CK South Dakota Fair 1930 96 28
LAKE ST. JOHN OUTLET South Dakota Fair 1930 96 324
BIG SIOUX RIVER South Dakota Poor 1930 96 135
TRIB. TO BIG SIOUX RIVER South Dakota Poor 1930 96 25
HIDEWOOD CREEK South Dakota Poor 1930 96 115
ELM CK South Dakota Poor 1930 96 18
CK South Dakota Poor 1930 96 43
CK South Dakota Poor 1930 96 30
CK South Dakota Fair 1930 96 186
LOST CK South Dakota Poor 1930 96 43
CK South Dakota Fair 1930 96 14
CK South Dakota Poor 1930 96 15
CK South Dakota Poor 1930 96 43
TURTLE CK South Dakota Poor 1930 96 10
CK South Dakota Fair 1930 96 145
CK South Dakota Poor 1930 96 59
CK South Dakota Poor 1930 96 10
SHAEFER CK South Dakota Poor 1930 96 25
CK South Dakota Fair 1930 96 44
WOLF CK South Dakota Poor 1930 96 10
ROCK CK South Dakota Fair 1930 96 35
PONY CK South Dakota Fair 1930 96 75
DRY CK South Dakota Fair 1930 96 26
CK South Dakota Fair 1930 96 145
CK South Dakota Poor 1930 96 25
BLACK PIPE CK South Dakota Poor 1930 96 27
CK South Dakota Poor 1930 96 42
SOUTH FORK PEARL CK South Dakota Poor 1930 96 15
MARSH CK South Dakota Fair 1930 96 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