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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
ANDES CK South Dakota Poor 1950 76 206
ANGOSTURA MAIN CANAL South Dakota Fair 1950 76 15
IRRIGATION DITCH South Dakota Good 1950 76 15
IRRIGATION DITCH South Dakota Good 1950 76 15
YELLOW BR CK South Dakota Fair 1950 76 445
CK South Dakota Poor 1950 76 35
PONCA CK South Dakota Fair 1950 76 140
NORTH FORK BAD RV South Dakota Poor 1950 76 48
MEXICAN CK South Dakota Poor 1950 76 58
HERMAPHRODITE CK South Dakota Fair 1950 76 28
TURTLE CK South Dakota Fair 1950 76 30
CK South Dakota Good 1950 76 29
CAPITOL LAKE OUTLET South Dakota Poor 1950 76 7,155
PONY CK South Dakota Poor 1950 76 317
UNNAMED CREEK South Dakota Fair 1950 76 35
COTTONWOOD CK South Dakota Poor 1950 76 15
REDSTONE CK South Dakota Poor 1950 76 15
CK South Dakota Poor 1950 76 580
MILLER CK South Dakota Poor 1950 76 50
TRIBUTARY TO BLINK CREEK South Dakota Fair 1950 76 25
TRIBUTARY TO BLIND CREEK South Dakota Good 1950 76 256
BEAVER CREEK South Dakota Fair 1950 76 100
TRIBUTARY TO BLIND CREEK South Dakota Fair 1950 76 99
TRIB S FORK BEAVER CREEK South Dakota Fair 1950 76 60
TRIB. TO E BRULE CREEK South Dakota Fair 1950 76 172
EAST BRULE CREEK South Dakota Poor 1950 76 50
EAST BRULE CREEK South Dakota Poor 1950 76 20
WATERHOLE CREEK South Dakota Poor 1950 76 15
CK South Dakota Poor 1950 76 10
ELK CK South Dakota Good 1950 76 151
CK South Dakota Good 1950 76 136
ELK CK South Dakota Fair 1950 76 10
ELK CK South Dakota Fair 1950 76 10
WEST PIPESTONE CK South Dakota Fair 1950 76 2,977
TRIB. TO JACK MOORE CRK South Dakota Poor 1950 76 10
TRIB. TO BACHELOR CREEK South Dakota Poor 1950 76 15
CASTLE CK South Dakota Poor 1950 76 73
BOX ELDER CK South Dakota Poor 1950 76 1,214
RAPID CK South Dakota Good 1950 76 813
CK South Dakota Good 1950 76 2,350
BOXELDER CK South Dakota Poor 1950 76 39
RABBIT CK South Dakota Poor 1950 76 26
LITTLE MINNESOTA RIVER South Dakota Poor 1950 76 35
CREEK South Dakota Poor 1950 76 25
LITTLE MINNESOTA RIVER South Dakota Poor 1950 76 30
BIG COULEE CREEK South Dakota Poor 1950 76 22
CREEK South Dakota Poor 1950 76 20
CREEK South Dakota Poor 1950 76 31
FORDHAM CREEK South Dakota Fair 1950 76 44
WILLOW CK South Dakota Poor 1950 76 46

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