South Dakota Website Statistics

All Bridges

  • Total listed South Dakota bridges: 532
  • Bridges with photos: 159 (29.9%)
  • Bridges with Street View: 84 (15.8%)
  • Bridges with GPS coordinates: 529 (99.4%)

  • Total photos: 1,622

Extant Bridges

  • Extant bridges: 401 (75.4% of all)
  • Bridges with photos: 141 (35.2% of extant)
  • Bridges with Street View: 79 (19.7% of extant)
  • Bridges with GPS coordinates: 399 (99.5% of extant)

Lost Bridges

  • Lost bridges: 103 (19.4% of all)
  • Bridges with photos: 16 (15.5% of lost)
  • Bridges with GPS coordinates: 102 (99.0% of lost)

Oldest Listed Bridges

  1. RCP&E - Boxelder Creek Bridge (Black Hawk) (Pennington County, built 1879, open to traffic)
  2. Banning Mill and Crossing (Minnehaha County, built 1884, collapsed)
  3. RCP&E - Bad River Bridge #9 (Stanley County, built 1885, open to traffic)
  4. RCP&E - Bad River Bridge #7 (Jones County, built 1885, open to traffic)
  5. RCP&E - Bad River Bridge #3 (Haakon County, built 1885, open to traffic)
  6. RCP&E - Bad River Bridge #1 (Haakon County, built 1885, open to traffic)
  7. RCP&E - Old Bad River Bridge #3 (Haakon County, built 1885, in storage)
  8. RCP&E - Bad River Bridge #13 (Stanley County, built 1885, open to traffic)
  9. RCP&E - Bad River Bridge #5 (Haakon County, built 1885, open to traffic)
  10. RCP&E - Bad River Bridge #14 (Stanley County, built 1885, open to traffic)

By Design

  • Arch: 38 (7.1%)
    • Deck arch: 35 (6.6%)
      • Closed-spandrel arch: 13 (2.4%)
      • Open-spandrel arch: 1 (0.2%)
      • Steel arch: 2 (0.4%)
      • Stone arch: 16 (3.0%)
      • Timber arch: 2 (0.4%)
    • Through arch: 2 (0.4%)
      • Concrete through arch: 1 (0.2%)
      • Steel through arch: 1 (0.2%)

  • Beam: 51 (9.6%)
    • Stringer: 47 (8.8%)
      • Concrete stringer: 3 (0.6%)
      • Steel stringer: 33 (6.2%)
      • Timber stringer: 5 (0.9%)
    • Concrete tee beam: 1 (0.2%)

  • Culvert: 5 (0.9%)
    • Concrete culvert: 2 (0.4%)

  • Floating: 1 (0.2%)
    • Pontoon: 1 (0.2%)

  • Girder: 31 (5.8%)
    • Deck girder: 13 (2.4%)
      • Concrete deck girder: 1 (0.2%)
      • Deck plate girder: 12 (2.3%)
    • Pony/through girder: 15 (2.8%)
      • Pony/through plate girder: 15 (2.8%)

  • Other: 4 (0.8%)

  • Slab: 10 (1.9%)

  • Truss: 383 (72.0%)
    • Bedstead pony truss: 5 (0.9%)
      • Bedstead Pratt pony truss: 4 (0.8%)
    • Deck truss: 9 (1.7%)
      • Double-intersection Warren deck truss: 1 (0.2%)
      • Pratt deck truss: 1 (0.2%)
      • Warren deck truss: 2 (0.4%)
    • Modern truss: 1 (0.2%)
      • Modern through truss: 1 (0.2%)
        • Modern Warren through truss: 1 (0.2%)
    • Pony truss: 261 (49.1%)
      • Bailey pony truss: 1 (0.2%)
      • Double-intersection Warren pony truss: 1 (0.2%)
      • Howe pony truss: 1 (0.2%)
      • Kingpost pony truss: 3 (0.6%)
      • Polygonal Warren pony truss: 6 (1.1%)
        • Polygonal Warren pony truss with alternating verticals: 2 (0.4%)
        • Polygonal Warren pony truss with all verticals: 1 (0.2%)
      • Pratt pony truss: 15 (2.8%)
      • Half-hip Pratt pony truss: 5 (0.9%)
      • Queenpost pony truss: 6 (1.1%)
      • Warren pony truss: 21 (3.9%)
        • Warren pony truss with alternating verticals: 3 (0.6%)
        • Warren pony truss with all verticals: 5 (0.9%)
    • Through truss: 105 (19.7%)
      • Camelback through truss: 1 (0.2%)
      • Lattice through truss: 21 (3.9%)
        • Quadrangular lattice through truss: 20 (3.8%)
      • Parker through truss: 9 (1.7%)
      • Pennsylvania through truss: 6 (1.1%)
      • Polygonal Warren through truss: 1 (0.2%)
      • Pratt through truss: 32 (6.0%)
      • Thacher through truss: 1 (0.2%)
      • Warren through truss: 13 (2.4%)
        • Warren through truss with all verticals: 3 (0.6%)

    • Tunnel: 4 (0.8%)

    • Unknown: 5 (0.9%)