Michigan Website Statistics

All Bridges

  • Total listed Michigan bridges: 849
  • Bridges with photos: 439 (51.7%)
  • Bridges with Street View: 267 (31.4%)
  • Bridges with GPS coordinates: 821 (96.7%)

  • Total photos: 2,938

Extant Bridges

  • Extant bridges: 557 (65.6% of all)
  • Bridges with photos: 265 (47.6% of extant)
  • Bridges with Street View: 241 (43.3% of extant)
  • Bridges with GPS coordinates: 535 (96.1% of extant)

Lost Bridges

  • Lost bridges: 266 (31.3% of all)
  • Bridges with photos: 130 (48.9% of lost)
  • Bridges with GPS coordinates: 263 (98.9% of lost)

Oldest Listed Bridges

  1. Ackley Covered Bridge 22-82-01 (Wayne County, built 1832, open to traffic)
  2. Washington Street Bridge (Older) (Shiawassee County, built 1859, replaced by new bridge)
  3. ADBF - South Branch Raisin River Stone Arch (Lenawee County, built 1867, open to traffic)
  4. White's Covered Bridge 22-34-01x (Ionia County, built 1867, destroyed by fire)
  5. Ada Covered Bridge (Replica) (Kent County, built 1867/1980, open to pedestrians)
  6. Farrand Bridge (Old) (St. Joseph County, built 1868, replaced by new bridge)
  7. Bridge Street Bridge (Older) (Eaton County, built 1870, unknown status)
  8. Upper Bridge (Midland County, built 1871, destroyed by flood)
  9. Fallasburg Covered Bridge 22-41-02 (Kent County, built 1871, open to traffic)
  10. NYC - Hudson Arch Bridge (Lenawee County, built 1871, closed to all traffic)

By Design

  • Arch: 167 (19.7%)
    • Deck arch: 149 (17.6%)
      • Closed-spandrel arch: 53 (6.2%)
      • Luten arch: 2 (0.2%)
      • Open-spandrel arch: 5 (0.6%)
      • Ribbed closed-spandrel arch: 1 (0.1%)
      • Steel arch: 5 (0.6%)
      • Stone arch: 18 (2.1%)
      • Timber arch: 1 (0.1%)
    • Pony arch: 3 (0.4%)
      • Concrete pony arch: 3 (0.4%)
    • Through arch: 13 (1.5%)
      • Concrete through arch: 4 (0.5%)
      • Steel through arch: 4 (0.5%)
      • Timber through arch: 3 (0.4%)

  • Beam: 95 (11.2%)
    • Stringer: 74 (8.7%)
      • Steel stringer: 36 (4.2%)
      • Timber stringer: 31 (3.7%)
    • Concrete tee beam: 12 (1.4%)

  • Culvert: 2 (0.2%)
    • Stone culvert: 1 (0.1%)

  • Ferry: 8 (0.9%)

  • Rigid frame: 11 (1.3%)
    • Concrete rigid frame: 10 (1.2%)
    • Steel rigid frame: 1 (0.1%)

  • Girder: 129 (15.2%)
    • Deck girder: 61 (7.2%)
      • Concrete deck girder: 3 (0.4%)
      • Deck plate girder: 47 (5.5%)
    • Pony/through girder: 65 (7.7%)
      • Concrete pony/through girder: 13 (1.5%)
      • Concrete curved chord through girder: 25 (2.9%)
      • Pony/through plate girder: 26 (3.1%)

  • Other: 17 (2.0%)

  • Slab: 7 (0.8%)

  • Suspension: 5 (0.6%)
    • Wire suspension: 5 (0.6%)

  • Truss: 393 (46.3%)
    • Bedstead pony truss: 2 (0.2%)
      • Bedstead Pratt pony truss: 2 (0.2%)
    • Deck truss: 27 (3.2%)
      • Deck arch-truss: 1 (0.1%)
      • Double-intersection Warren deck truss: 2 (0.2%)
      • Howe deck truss: 1 (0.1%)
      • Pratt deck truss: 7 (0.8%)
      • Warren deck truss: 8 (0.9%)
        • Warren deck truss with alternating verticals: 1 (0.1%)
        • Warren deck truss with sub-panels: 1 (0.1%)
        • Warren deck truss with all verticals: 2 (0.2%)
    • Modern truss: 1 (0.1%)
      • Modern through truss: 1 (0.1%)
        • Modern Pratt pony truss: 1 (0.1%)
    • Pony truss: 180 (21.2%)
      • Bowstring pony truss: 3 (0.4%)
      • Double-intersection Warren pony truss: 2 (0.2%)
      • Parker pony truss: 10 (1.2%)
      • Pratt pony truss: 21 (2.5%)
      • Half-hip Pratt pony truss: 13 (1.5%)
      • Queenpost pony truss: 1 (0.1%)
      • Warren pony truss: 20 (2.4%)
        • Warren pony truss with alternating verticals: 5 (0.6%)
        • Warren pony truss with all verticals: 2 (0.2%)
    • Through truss: 172 (20.3%)
      • Baltimore through truss: 7 (0.8%)
      • Bowstring through truss: 7 (0.8%)
      • Brown through truss: 4 (0.5%)
      • Camelback through truss: 2 (0.2%)
      • Double-intersection Warren through truss: 2 (0.2%)
      • Howe through truss: 3 (0.4%)
      • Lattice through truss: 4 (0.5%)
        • Quadrangular lattice through truss: 2 (0.2%)
        • Town lattice truss: 1 (0.1%)
      • Multiple Kingpost through truss: 1 (0.1%)
      • Parker through truss: 4 (0.5%)
      • Pennsylvania through truss: 5 (0.6%)
      • Post through truss: 1 (0.1%)
      • Pratt through truss: 85 (10.0%)
      • Thacher through truss: 1 (0.1%)
      • Warren through truss: 18 (2.1%)
        • Warren through truss with sub-panels: 1 (0.1%)
        • Warren through truss with all verticals: 9 (1.1%)
      • Whipple through truss: 5 (0.6%)

  • Tunnel: 3 (0.4%)

  • Unknown: 12 (1.4%)