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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
SOUTH FORK WHETSTONE RV South Dakota Fair 1936 90 52
NORTH FORK WHETSTONE RV South Dakota Fair 1936 90 52
SOUTH FORK YELLOW BANK R South Dakota Fair 1936 90 52
LAKE MARSH INLET South Dakota Fair 1936 90 135
CK South Dakota Fair 1936 90 116
SHEEP CK South Dakota Poor 1936 90 60
DAWSON CK South Dakota Fair 1936 90 45
COTTONWOOD CK South Dakota Poor 1936 90 35
WEST BRULE CREEK South Dakota Fair 1936 90 35
EAST BR WOLF CK South Dakota Fair 1936 90 749
BR WOLF CK South Dakota Fair 1936 90 749
TRIB. TO BOX ELDER CREEK South Dakota Fair 1936 90 115
TRIB. TO BOX ELDER CREEK South Dakota Fair 1936 90 90
CK South Dakota Good 1936 90 143
CK South Dakota Good 1936 90 143
BNSF RAILROAD South Dakota Fair 1936 90 10
DRAINAGE DITCH South Dakota Fair 1936 90 1,738
FOSTER CREEK South Dakota Fair 1936 90 39
DAN POWELL CK South Dakota Poor 1936 90 210
OKOBOJO CK South Dakota Fair 1936 90 250
OKOBOJO CK South Dakota Fair 1936 90 47
LAKE CREEK South Dakota Fair 1936 90 15
HORSE CK South Dakota Poor 1937 89 46
MARTY MISSION SPILLWAY South Dakota Fair 1937 89 48
FRENCH CK South Dakota Fair 1937 89 700
CHOTEAU CK South Dakota Fair 1937 89 25
DAWSON CK South Dakota Fair 1937 89 45
DAWSON CREEK South Dakota Fair 1937 89 45
FIRESTEEL CK South Dakota Poor 1937 89 20
MORRIS CK South Dakota Poor 1937 89 20
R&W RR South Dakota Fair 1937 89 149
PARK CK South Dakota Fair 1937 89 684
COUNTY RD RC P&E RR South Dakota Poor 1937 89 500
WOLF CK South Dakota Fair 1937 89 749
TRIB TO BIG SIOUX RV South Dakota Fair 1937 89 65
SLIP-UP CREEK South Dakota Fair 1937 89 53
TRIB TO W PIPESTONE CK South Dakota Poor 1937 89 28
TRIB TO SPLIT ROCK CK South Dakota Poor 1937 89 28
CREEK South Dakota Fair 1937 89 412
CREEK South Dakota Fair 1937 89 412
CREEK South Dakota Fair 1937 89 408
BEAVER CREEK South Dakota Fair 1937 89 40
MEDARY CK South Dakota Poor 1938 88 1,275
MUD CREEK South Dakota Fair 1938 88 98
YANKTON CLAY DITCH South Dakota Poor 1938 88 25
BURLINGTON NORTHERN RR South Dakota Poor 1938 88 218
CREEK South Dakota Fair 1938 88 60
CREEK South Dakota Fair 1938 88 55
NORTH FORK YELLOW BANK R South Dakota Fair 1938 88 100
CK South Dakota Fair 1938 88 100

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