South Dakota Website Statistics

All Bridges

  • Total listed South Dakota bridges: 553
  • Bridges with photos: 161 (29.1%)
  • Bridges with Street View: 88 (15.9%)
  • Bridges with GPS coordinates: 550 (99.5%)

  • Total photos: 1,632

Extant Bridges

  • Extant bridges: 416 (75.2% of all)
  • Bridges with photos: 139 (33.4% of extant)
  • Bridges with Street View: 81 (19.5% of extant)
  • Bridges with GPS coordinates: 414 (99.5% of extant)

Lost Bridges

  • Lost bridges: 110 (19.9% of all)
  • Bridges with photos: 18 (16.4% of lost)
  • Bridges with GPS coordinates: 109 (99.1% of lost)

Oldest Listed Bridges

  1. RCP&E - Boxelder Creek Bridge (Black Hawk) (Pennington County, built 1879, open to traffic)
  2. RCP&E - Bad River Bridge #5 (Haakon County, built 1885, open to traffic)
  3. RCP&E - Bad River Bridge #13 (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 #14 (Stanley County, built 1885, open to traffic)
  7. RCP&E - Bad River Bridge #9 (Stanley County, built 1885, open to traffic)
  8. RCP&E - Bad River Bridge #1 (Haakon County, built 1885, open to traffic)
  9. RCP&E - Old Bad River Bridge #3 (Haakon County, built 1885, in storage)
  10. RCP&E - Bad River Bridge #4 (Haakon County, built 1886, open to traffic)

By Design

  • Arch: 47 (8.5%)
    • Deck arch: 43 (7.8%)
      • Brick arch: 8 (1.4%)
      • Closed-spandrel arch: 13 (2.4%)
      • Open-spandrel arch: 1 (0.2%)
      • Steel arch: 2 (0.4%)
      • Stone arch: 16 (2.9%)
      • Timber arch: 2 (0.4%)
    • Through arch: 3 (0.5%)
      • Concrete through arch: 1 (0.2%)
      • Marsh arch: 1 (0.2%)
      • Steel through arch: 1 (0.2%)

  • Beam: 57 (10.3%)
    • Stringer: 53 (9.6%)
      • Concrete stringer: 3 (0.5%)
      • Steel stringer: 37 (6.7%)
      • Timber stringer: 7 (1.3%)
    • Concrete tee beam: 1 (0.2%)

  • Culvert: 6 (1.1%)
    • Concrete culvert: 2 (0.4%)
    • Stone culvert: 1 (0.2%)

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

  • Girder: 31 (5.6%)
    • Deck girder: 13 (2.4%)
      • Concrete deck girder: 1 (0.2%)
      • Deck plate girder: 12 (2.2%)
    • Pony/through girder: 15 (2.7%)
      • Pony/through plate girder: 15 (2.7%)

  • Other: 4 (0.7%)

  • Slab: 11 (2.0%)

  • Truss: 385 (69.6%)
    • Bedstead pony truss: 5 (0.9%)
      • Bedstead Pratt pony truss: 4 (0.7%)
    • Deck truss: 10 (1.8%)
      • 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: 262 (47.4%)
      • Bailey pony truss: 1 (0.2%)
      • Double-intersection Warren pony truss: 2 (0.4%)
      • Howe pony truss: 1 (0.2%)
      • Kingpost pony truss: 3 (0.5%)
      • 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 (2.7%)
      • Half-hip Pratt pony truss: 5 (0.9%)
      • Queenpost pony truss: 6 (1.1%)
      • Warren pony truss: 22 (4.0%)
        • Warren pony truss with alternating verticals: 3 (0.5%)
        • Warren pony truss with all verticals: 5 (0.9%)
    • Through truss: 105 (19.0%)
      • Camelback through truss: 1 (0.2%)
      • Lattice through truss: 21 (3.8%)
        • Quadrangular lattice through truss: 20 (3.6%)
      • Parker through truss: 9 (1.6%)
      • Pennsylvania through truss: 6 (1.1%)
      • Polygonal Warren through truss: 1 (0.2%)
      • Pratt through truss: 32 (5.8%)
      • Thacher through truss: 1 (0.2%)
      • Warren through truss: 14 (2.5%)
        • Warren through truss with all verticals: 3 (0.5%)

    • Tunnel: 4 (0.7%)

    • Unknown: 7 (1.3%)