Montana Website Statistics

All Bridges

  • Total listed Montana bridges: 371
  • Bridges with photos: 92 (24.8%)
  • Bridges with Street View: 93 (25.1%)
  • Bridges with GPS coordinates: 359 (96.8%)

  • Total photos: 688

Extant Bridges

  • Extant bridges: 266 (71.7% of all)
  • Bridges with photos: 71 (26.7% of extant)
  • Bridges with Street View: 78 (29.3% of extant)
  • Bridges with GPS coordinates: 257 (96.6% of extant)

Lost Bridges

  • Lost bridges: 84 (22.6% of all)
  • Bridges with photos: 18 (21.4% of lost)
  • Bridges with GPS coordinates: 83 (98.8% of lost)

Oldest Listed Bridges

  1. Morelli Bridge (Lewis and Clark County, built 1881, open to traffic)
  2. Fort Benton Bridge (Chouteau County, built 1888, open to pedestrians)
  3. Gallatin River Bridge (Gallatin County, built 1891, open to traffic)
  4. Big Hole River Bridge (Beaverhead County, built 1892, lost)
  5. Van Buren Street Footbridge (Missoula County, built 1892, open to pedestrians)
  6. Gallatin River Bridge (Gallatin County, built 1892, open to traffic)
  7. Roundup Bridge (Musselshell County, built 1894, open to traffic)
  8. Ten Mile Creek Bridge (Lewis and Clark County, built 1894, open to traffic)
  9. Kalispell Old Steel Bridge (Flathead County, built 1894, replaced by new bridge)
  10. Jefferson River Bridge (Gallatin County, built 1894, open to traffic)

By Design

  • Arch: 21 (5.7%)
    • Deck arch: 20 (5.4%)
      • Closed-spandrel arch: 7 (1.9%)
      • Open-spandrel arch: 2 (0.5%)
      • Stone arch: 2 (0.5%)
    • Through arch: 1 (0.3%)
      • Marsh arch: 1 (0.3%)

  • Beam: 13 (3.5%)
    • Stringer: 8 (2.2%)
      • Concrete stringer: 2 (0.5%)
      • Steel stringer: 3 (0.8%)
      • Timber stringer: 3 (0.8%)
    • Concrete tee beam: 5 (1.3%)

  • Ferry: 3 (0.8%)

  • Girder: 11 (3.0%)
    • Deck girder: 9 (2.4%)
      • Deck plate girder: 9 (2.4%)
    • Pony/through girder: 1 (0.3%)
      • Pony/through plate girder: 1 (0.3%)

  • Slab: 1 (0.3%)

  • Suspension: 2 (0.5%)
    • Wire suspension: 2 (0.5%)

  • Truss: 312 (84.1%)
    • Deck truss: 24 (6.5%)
      • Baltimore deck truss: 1 (0.3%)
      • Pratt deck truss: 4 (1.1%)
      • Warren deck truss: 7 (1.9%)
        • Warren deck truss with all verticals: 1 (0.3%)
    • Half-through truss: 1 (0.3%)
      • Pratt half-through truss: 1 (0.3%)
    • Pony truss: 132 (35.6%)
      • Parker pony truss: 1 (0.3%)
      • Polygonal Warren pony truss: 2 (0.5%)
      • Pratt pony truss: 5 (1.3%)
      • Warren pony truss: 9 (2.4%)
    • Through truss: 138 (37.2%)
      • Camelback through truss: 3 (0.8%)
      • Lattice through truss: 2 (0.5%)
        • Triple-intersection lattice through truss: 2 (0.5%)
      • Parker through truss: 13 (3.5%)
      • Pennsylvania through truss: 11 (3.0%)
      • Polygonal Warren through truss: 5 (1.3%)
      • Pratt through truss: 32 (8.6%)
      • Warren through truss: 10 (2.7%)

  • Tunnel: 2 (0.5%)

  • Unknown: 6 (1.6%)