South Dakota Website Statistics

All Bridges

  • Total listed South Dakota bridges: 608
  • Bridges with photos: 187 (30.8%)
  • Bridges with Street View: 105 (17.3%)
  • Bridges with GPS coordinates: 606 (99.7%)

  • Total photos: 1,916

Extant Bridges

  • Extant bridges: 401 (66.0% of all)
  • Bridges with photos: 153 (38.2% of extant)
  • Bridges with Street View: 97 (24.2% of extant)
  • Bridges with GPS coordinates: 400 (99.8% of extant)

Lost Bridges

  • Lost bridges: 184 (30.3% of all)
  • Bridges with photos: 26 (14.1% of lost)
  • Bridges with GPS coordinates: 183 (99.5% of lost)

Oldest Listed Bridges

  1. RCP&E - Boxelder Creek Bridge (Black Hawk) (Pennington County, built 1880, open to traffic)
  2. RCP&E - Bad River Bridge #3 (Haakon County, built 1885, open to traffic)
  3. RCP&E - Bad River Bridge #1 (Haakon County, built 1885, open to traffic)
  4. RCP&E - Bad River Bridge #14 (Stanley County, built 1885, open to traffic)
  5. RCP&E - Old Bad River Bridge #3 (Haakon County, built 1885, in storage)
  6. RCP&E - Bad River Bridge #9 (Stanley County, built 1885, open to traffic)
  7. RCP&E - Bad River Bridge #7 (Jones County, built 1885, open to traffic)
  8. RCP&E - Bad River Bridge #5 (Haakon County, built 1885, open to traffic)
  9. RCP&E - Bad River Bridge #6 (Haakon County, built 1886, open to traffic)
  10. RCP&E - Bad River Bridge #10 (Stanley County, built 1886, open to traffic)

By Design

  • Arch: 47 (7.7%)
    • Deck arch: 43 (7.1%)
      • Brick arch: 8 (1.3%)
      • Closed-spandrel arch: 13 (2.1%)
      • Open-spandrel arch: 1 (0.2%)
      • Steel arch: 2 (0.3%)
      • Stone arch: 16 (2.6%)
      • Timber arch: 2 (0.3%)
    • Through arch: 3 (0.5%)
      • Concrete through arch: 1 (0.2%)
      • Marsh arch: 1 (0.2%)
      • Steel through arch: 1 (0.2%)

  • Beam: 72 (11.8%)
    • Stringer: 67 (11.0%)
      • Concrete stringer: 3 (0.5%)
      • Steel stringer: 47 (7.7%)
      • Timber stringer: 11 (1.8%)
    • Concrete tee beam: 2 (0.3%)

  • Culvert: 6 (1.0%)
    • Concrete culvert: 2 (0.3%)
    • Stone culvert: 1 (0.2%)

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

  • Girder: 41 (6.7%)
    • Deck girder: 18 (3.0%)
      • Concrete deck girder: 1 (0.2%)
      • Deck plate girder: 17 (2.8%)
    • Pony/through girder: 20 (3.3%)
      • Pony/through plate girder: 20 (3.3%)

  • Other: 4 (0.7%)

  • Slab: 20 (3.3%)

  • Truss: 407 (66.9%)
    • Bedstead pony truss: 6 (1.0%)
      • Bedstead Pratt pony truss: 5 (0.8%)
    • Deck truss: 9 (1.5%)
      • Double-intersection Warren deck truss: 1 (0.2%)
      • Pratt deck truss: 1 (0.2%)
      • Warren deck truss: 3 (0.5%)
    • Modern truss: 1 (0.2%)
      • Modern through truss: 1 (0.2%)
        • Modern Warren through truss: 1 (0.2%)
    • Pony truss: 285 (46.9%)
      • Bailey pony truss: 1 (0.2%)
      • Double-intersection Warren pony truss: 2 (0.3%)
      • Howe pony truss: 1 (0.2%)
      • Kingpost pony truss: 3 (0.5%)
      • Polygonal Warren pony truss: 6 (1.0%)
        • Polygonal Warren pony truss with alternating verticals: 2 (0.3%)
        • Polygonal Warren pony truss with all verticals: 1 (0.2%)
      • Pratt pony truss: 14 (2.3%)
      • Half-hip Pratt pony truss: 7 (1.2%)
      • Queenpost pony truss: 6 (1.0%)
      • Warren pony truss: 29 (4.8%)
        • Warren pony truss with alternating verticals: 5 (0.8%)
        • Warren pony truss with all verticals: 7 (1.2%)
    • Through truss: 106 (17.4%)
      • Camelback through truss: 1 (0.2%)
      • Lattice through truss: 21 (3.5%)
        • Quadrangular lattice through truss: 20 (3.3%)
      • Parker through truss: 9 (1.5%)
      • Pennsylvania through truss: 6 (1.0%)
      • Polygonal Warren through truss: 1 (0.2%)
      • Pratt through truss: 34 (5.6%)
      • Thacher through truss: 1 (0.2%)
      • Warren through truss: 14 (2.3%)
        • Warren through truss with all verticals: 3 (0.5%)

    • Tunnel: 5 (0.8%)

    • Unknown: 5 (0.8%)