Washington Website Statistics

All Bridges

  • Total listed Washington bridges: 1,278
  • Bridges with photos: 880 (68.9%)
  • Bridges with Street View: 657 (51.4%)
  • Bridges with GPS coordinates: 1,272 (99.5%)

  • Total photos: 6,553

Extant Bridges

  • Extant bridges: 990 (77.5% of all)
  • Bridges with photos: 663 (67.0% of extant)
  • Bridges with Street View: 602 (60.8% of extant)
  • Bridges with GPS coordinates: 985 (99.5% of extant)

Lost Bridges

  • Lost bridges: 270 (21.1% of all)
  • Bridges with photos: 196 (72.6% of lost)
  • Bridges with GPS coordinates: 270 (100.0% of lost)

Oldest Listed Bridges

  1. Plante's Ferry (site) (Spokane County, built 1851, lost)
  2. Swantown Slough Bridge (Old (Thurston County, built 1869, lost)
  3. Yakima Greenway Trail - Naches River Bridge (Yakima County, built 1884, open to pedestrians)
  4. BN - Snake River Bridge (Old) (Walla Walla County, built 1884, replaced by new bridge)
  5. SLS&E High Bridge (Spokane County, built 1888, removed)
  6. NP - Sammamish River Bridge (Old) (King County, built 1888, replaced by new bridge)
  7. SLS&E - Snohomish River Bridge (Snohomish County, built 1888, replaced by new bridge)
  8. Monroe Street Bridge (First) (Spokane County, built 1889, destroyed by fire)
  9. Avenue D Swing Bridge (1889) (Snohomish County, built 1889, replaced by new bridge)
  10. UP - Riparia Bridge (Whitman County, built 1889, removed)

Oldest Listed Extant Bridges

  1. Yakima Greenway Trail - Naches River Bridge (Yakima County, built 1884, open to pedestrians)
  2. CWRR - Yakima River Bridge (Yakima County, built 1891, open to traffic)
  3. NRM - South Fork Snoqualmie River Bridge (King County, built 1891, open to traffic)
  4. BNSF - Rock Island Bridge (Douglas County, built 1892, open to traffic)
  5. Yakima Valley Trolley - Naches River Bridge (Yakima County, built 1895, open to traffic)
  6. Willapa Hills Trail - Newaukum River Bridge (Lewis County, built 1896, open to pedestrians)
  7. NP - Wilkeson Creek Bridge (Pierce County, built 1896, abandoned)
  8. Red Mountain Railroad Bridge (Stevens County, built 1896, abandoned)
  9. Willapa Hills Trail - Willapa River Bridge #2 (Pacific County, built 1896, open to pedestrians)
  10. Willapa Hills Trail - Willapa River Bridge #3 (Pacific County, built 1896, open to pedestrians)

By Design

  • Arch: 264 (20.7%)
    • Deck arch: 239 (18.7%)
      • Closed-spandrel arch: 67 (5.2%)
      • Luten arch: 5 (0.4%)
      • Open-spandrel arch: 37 (2.9%)
      • Steel arch: 16 (1.3%)
      • Stone arch: 1 (0.08%)
      • Timber arch: 2 (0.2%)
    • Pony arch: 1 (0.08%)
      • Concrete pony arch: 1 (0.08%)
    • Through arch: 21 (1.6%)
      • Concrete through arch: 5 (0.4%)
      • Steel through arch: 15 (1.2%)

  • Beam: 163 (12.8%)
    • Stringer: 87 (6.8%)
      • Concrete stringer: 11 (0.9%)
      • Steel stringer: 23 (1.8%)
      • Timber stringer: 39 (3.1%)
    • Concrete tee beam: 67 (5.2%)

  • Culvert: 2 (0.2%)
    • Concrete culvert: 2 (0.2%)

  • Ferry: 6 (0.5%)

  • Floating: 4 (0.3%)
    • Pontoon: 4 (0.3%)

  • Rigid frame: 11 (0.9%)
    • Concrete rigid frame: 11 (0.9%)

  • Girder: 138 (10.8%)
    • Deck girder: 83 (6.5%)
      • Concrete deck girder: 6 (0.5%)
      • Deck plate girder: 74 (5.8%)
    • Pony/through girder: 46 (3.6%)
      • Concrete pony/through girder: 3 (0.2%)
      • Pony/through plate girder: 42 (3.3%)

  • Other: 30 (2.3%)

  • Slab: 20 (1.6%)

  • Suspension: 34 (2.7%)
    • Cable-stayed: 7 (0.5%)
    • Wire suspension: 25 (2.0%)

  • Truss: 517 (40.5%)
    • Deck truss: 57 (4.5%)
      • Deck arch-truss: 1 (0.08%)
      • Baltimore deck truss: 2 (0.2%)
      • Double-intersection Warren deck truss: 1 (0.08%)
      • Howe deck truss: 4 (0.3%)
      • Pratt deck truss: 11 (0.9%)
      • Warren deck truss: 24 (1.9%)
        • Warren deck truss with all verticals: 3 (0.2%)
    • Modern truss: 5 (0.4%)
      • Modern deck truss: 1 (0.08%)
      • Modern pony truss: 1 (0.08%)
        • Modern Pratt pony truss: 1 (0.08%)
      • Modern through truss: 3 (0.2%)
        • Modern Warren through truss: 3 (0.2%)
    • Pony truss: 57 (4.5%)
      • Bailey pony truss: 3 (0.2%)
      • Miller & Borcherding pony truss: 1 (0.08%)
      • Howe pony truss: 3 (0.2%)
      • Kingpost pony truss: 1 (0.08%)
      • Polygonal Warren pony truss: 7 (0.5%)
        • Polygonal Warren pony truss with alternating verticals: 2 (0.2%)
      • Pratt pony truss: 7 (0.5%)
      • Warren pony truss: 15 (1.2%)
        • Warren pony truss with all verticals: 5 (0.4%)
    • Through truss: 390 (30.5%)
      • Baltimore through truss: 7 (0.5%)
      • Camelback through truss: 2 (0.2%)
      • Double-intersection Warren through truss: 4 (0.3%)
      • Howe through truss: 24 (1.9%)
      • Lattice through truss: 3 (0.2%)
        • Triple-intersection lattice through truss: 2 (0.2%)
      • Parker through truss: 33 (2.6%)
      • Pegram through truss: 1 (0.08%)
      • Pennsylvania through truss: 21 (1.6%)
      • Polygonal Warren through truss: 50 (3.9%)
        • Polygonal Warren through truss with alternating verticals: 1 (0.08%)
        • Polygonal Warren through truss with sub-panels: 1 (0.08%)
        • Polygonal Warren through truss with all verticals: 9 (0.7%)
      • Pratt through truss: 103 (8.1%)
      • Queenpost through truss: 1 (0.08%)
      • Warren through truss: 91 (7.1%)
        • Warren through truss with alternating verticals: 1 (0.08%)
        • Warren through truss with sub-panels: 1 (0.08%)
        • Warren through truss with all verticals: 14 (1.1%)

    • Tunnel: 65 (5.1%)

    • Unknown: 24 (1.9%)