Colorado Website Statistics

All Bridges

  • Total listed Colorado bridges: 402
  • Bridges with photos: 188 (46.8%)
  • Bridges with Street View: 112 (27.9%)
  • Bridges with GPS coordinates: 385 (95.8%)

  • Total photos: 870

Extant Bridges

  • Extant bridges: 320 (79.6% of all)
  • Bridges with photos: 149 (46.6% of extant)
  • Bridges with Street View: 100 (31.2% of extant)
  • Bridges with GPS coordinates: 316 (98.8% of extant)

Lost Bridges

  • Lost bridges: 70 (17.4% of all)
  • Bridges with photos: 32 (45.7% of lost)
  • Bridges with GPS coordinates: 60 (85.7% of lost)

Oldest Listed Bridges

  1. Devil's Gate Trestle (Clear Creek County, built 1877, open to traffic)
  2. Hanging Bridge (Fremont County, built 1879, open to traffic)
  3. John Blair Bridge (El Paso County, built 1880, open to pedestrians)
  4. Hortense Bridge (Chaffee County, built 1880, replaced by new bridge)
  5. Romley Bridge (Chaffee County, built 1881, open to pedestrians)
  6. D&SNG Hermosa Creek Bridge (La Plata County, built 1881, open to traffic)
  7. Matheson Railroad Bridge (Elbert County, built 1883, abandoned)
  8. Elk Park Bridge (San Juan County, built 1884, abandoned)
  9. Uravan Bridge (Montrose County, built 1886, open to pedestrians)
  10. Grand Junction State Bridge (Mesa County, built 1886, replaced by new bridge)

By Design

  • Arch: 69 (17.2%)
    • Deck arch: 56 (13.9%)
      • Closed-spandrel arch: 30 (7.5%)
      • Luten arch: 1 (0.2%)
      • Open-spandrel arch: 7 (1.7%)
      • Steel arch: 3 (0.7%)
      • Stone arch: 12 (3.0%)
    • Pony arch: 2 (0.5%)
      • Timber pony arch: 2 (0.5%)
    • Through arch: 7 (1.7%)
      • Marsh arch: 1 (0.2%)
      • Steel through arch: 3 (0.7%)
      • Timber through arch: 2 (0.5%)

  • Beam: 47 (11.7%)
    • Stringer: 35 (8.7%)
      • Steel stringer: 13 (3.2%)
      • Timber stringer: 22 (5.5%)
    • Concrete tee beam: 12 (3.0%)

  • Culvert: 27 (6.7%)
    • Stone culvert: 27 (6.7%)

  • Rigid frame: 4 (1.0%)
    • Concrete rigid frame: 4 (1.0%)

  • Girder: 15 (3.7%)
    • Deck girder: 11 (2.7%)
      • Concrete deck girder: 1 (0.2%)
      • Deck plate girder: 10 (2.5%)
    • Pony/through girder: 3 (0.7%)
      • Concrete pony/through girder: 1 (0.2%)
      • Pony/through plate girder: 2 (0.5%)

  • Other: 3 (0.7%)

  • Slab: 1 (0.2%)

  • Suspension: 3 (0.7%)
    • Wire suspension: 3 (0.7%)

  • Truss: 195 (48.5%)
    • Bedstead pony truss: 1 (0.2%)
      • Bedstead Warren pony truss: 1 (0.2%)
    • Deck truss: 11 (2.7%)
      • Double-intersection Warren deck truss: 1 (0.2%)
      • Pratt deck truss: 5 (1.2%)
      • Warren deck truss: 4 (1.0%)
    • Pony truss: 110 (27.4%)
      • Parker pony truss: 25 (6.2%)
      • Polygonal Warren pony truss: 8 (2.0%)
        • Polygonal Warren pony truss with alternating verticals: 1 (0.2%)
      • Pratt pony truss: 11 (2.7%)
      • Half-hip Pratt pony truss: 1 (0.2%)
      • Queenpost pony truss: 2 (0.5%)
      • Warren pony truss: 8 (2.0%)
        • Warren pony truss with alternating verticals: 1 (0.2%)
    • Through truss: 73 (18.2%)
      • Camelback through truss: 4 (1.0%)
      • Double-intersection Warren through truss: 1 (0.2%)
      • Howe through truss: 1 (0.2%)
      • Parker through truss: 13 (3.2%)
      • Pennsylvania through truss: 5 (1.2%)
      • Polygonal Warren through truss: 2 (0.5%)
        • Polygonal Warren through truss with all verticals: 1 (0.2%)
      • Pratt through truss: 40 (10.0%)
      • Thacher through truss: 1 (0.2%)
      • Warren through truss: 3 (0.7%)

  • Tunnel: 33 (8.2%)

  • Unknown: 5 (1.2%)