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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
SILVER CREEK South Dakota Fair 1930 96 60
DEADMAN CREEK South Dakota Fair 1930 96 60
CREEK South Dakota Fair 1930 96 60
BEAVER CREEK South Dakota Poor 1930 96 60
CK South Dakota Fair 1930 96 92
CK South Dakota Poor 1930 96 92
CK South Dakota Poor 1930 96 92
NORTH DEER CK South Dakota Poor 1930 96 92
SIX MILE CK South Dakota Fair 1930 96 92
BIG SIOUX RV South Dakota Poor 1930 96 1,330
CK South Dakota Poor 1930 96 92
BR NORTH DEER CK South Dakota Poor 1930 96 92
CK South Dakota Fair 1930 96 92
MEDARY CK South Dakota Poor 1930 96 92
SIX MILE CK South Dakota Poor 1930 96 92
CK South Dakota Fair 1930 96 92
CK South Dakota Poor 1930 96 19
DEER CK South Dakota Poor 1930 96 92
CK South Dakota Poor 1930 96 50
CK South Dakota Poor 1930 96 92
CK South Dakota Fair 1930 96 92
CK South Dakota Poor 1930 96 92
CK South Dakota Fair 1930 96 92
CK South Dakota Fair 1930 96 92
CK South Dakota Fair 1930 96 62
CREEK South Dakota Poor 1930 96 98
MUD CREEK South Dakota Poor 1930 96 98
CREEK South Dakota Poor 1930 96 1,400
CREEK South Dakota Fair 1930 96 98
CREEK South Dakota Fair 1930 96 98
CREEK South Dakota Fair 1930 96 235
HAY CK South Dakota Poor 1930 96 12
SOUTH FORK MOREAU RV South Dakota Poor 1930 96 22
DRAINAGE DITCH South Dakota Poor 1930 96 4
CREEK South Dakota Poor 1930 96 48
ANDES CREEK South Dakota Poor 1930 96 48
CHOTEAU CREEK South Dakota Poor 1930 96 48
CK South Dakota Fair 1930 96 97
CK South Dakota Fair 1930 96 25
VERMILLION RV South Dakota Poor 1930 96 15
VERMILLION RV South Dakota Poor 1930 96 97
HUMP CREEK South Dakota Poor 1930 96 30
NORTH BR TWELVE MILE CK South Dakota Poor 1930 96 64
NORTH BR TWELVE MILE CK South Dakota Poor 1930 96 64
SOUTH FORK TWELVE MILE C South Dakota Poor 1930 96 81
MUD CREEK South Dakota Fair 1930 96 69
CREEK South Dakota Good 1930 96 376
CREEK South Dakota Fair 1930 96 15
CREEK South Dakota Poor 1930 96 15
CREEK South Dakota Fair 1930 96 27

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