New Hampshire Website Statistics

All Bridges

  • Total listed New Hampshire bridges: 555
  • Bridges with photos: 384 (69.2%)
  • Bridges with Street View: 242 (43.6%)
  • Bridges with GPS coordinates: 554 (99.8%)

  • Total photos: 6,294

Extant Bridges

  • Extant bridges: 440 (79.3% of all)
  • Bridges with photos: 301 (68.4% of extant)
  • Bridges with Street View: 210 (47.7% of extant)
  • Bridges with GPS coordinates: 439 (99.8% of extant)

Lost Bridges

  • Lost bridges: 104 (18.7% of all)
  • Bridges with photos: 73 (70.2% of lost)
  • Bridges with GPS coordinates: 104 (100.0% of lost)

Oldest Listed Bridges

  1. Highbridge (Hillsborough County, built 1820, open to traffic)
  2. Amoskeag Bridge (Hillsborough County, built 1825, destroyed by flood)
  3. Bath/Haverhill Covered Bridge 29-05-04 (Grafton County, built 1827, open to pedestrians)
  4. Taylor Falls Covered Bridge (Hillsborough County, built 1827, replaced by new bridge)
  5. Thompson Covered Bridge 29-03-04 (Cheshire County, built 1832, open to traffic)
  6. Bath Bridge 29-05-03 (Grafton County, built 1832, open to traffic)
  7. Weirs Channel Bridge (1833) 29-01-P01x (Belknap County, built 1833, replaced by new bridge)
  8. Pemigewasset River Central Steet Bridge (Grafton County, built 1836, replaced by new bridge)
  9. Coombs Covered Bridge 29-03-03 (Cheshire County, built 1837, open to traffic)
  10. Tucker Toll Covered Bridge 45-13-54x / 29-03-22x (Cheshire County, built 1840, replaced by new bridge)

By Design

  • Arch: 113 (20.4%)
    • Deck arch: 106 (19.1%)
      • Closed-spandrel arch: 6 (1.1%)
      • Luten arch: 1 (0.2%)
      • Open-spandrel arch: 1 (0.2%)
      • Steel arch: 1 (0.2%)
      • Stone arch: 55 (9.9%)
    • Through arch: 6 (1.1%)
      • Steel through arch: 6 (1.1%)

  • Beam: 81 (14.6%)
    • Stringer: 76 (13.7%)
      • Concrete stringer: 1 (0.2%)
      • Steel stringer: 11 (2.0%)
      • Timber stringer: 62 (11.2%)
    • Concrete tee beam: 5 (0.9%)

  • Culvert: 3 (0.5%)
    • Concrete culvert: 2 (0.4%)
    • Stone culvert: 1 (0.2%)

  • Rigid frame: 10 (1.8%)
    • Concrete rigid frame: 8 (1.4%)
    • Steel rigid frame: 1 (0.2%)

  • Girder: 68 (12.3%)
    • Deck girder: 31 (5.6%)
      • Deck plate girder: 29 (5.2%)
    • Pony/through girder: 34 (6.1%)
      • Pony/through plate girder: 34 (6.1%)

  • Other: 2 (0.4%)

  • Slab: 8 (1.4%)

  • Suspension: 5 (0.9%)
    • Wire suspension: 4 (0.7%)

  • Truss: 258 (46.5%)
    • Deck truss: 35 (6.3%)
      • Baltimore deck truss: 2 (0.4%)
      • Double-intersection Warren deck truss: 2 (0.4%)
      • Lattice deck truss: 2 (0.4%)
      • Lenticular deck truss: 2 (0.4%)
      • Pratt deck truss: 5 (0.9%)
      • Warren deck truss: 16 (2.9%)
        • Warren deck truss with alternating verticals: 4 (0.7%)
        • Warren deck truss with all verticals: 6 (1.1%)
    • Modern truss: 2 (0.4%)
      • Modern pony truss: 1 (0.2%)
        • Modern polygonal Warren pony truss: 1 (0.2%)
      • Modern through truss: 1 (0.2%)
        • Modern Pratt through truss: 1 (0.2%)
    • Pony truss: 30 (5.4%)
      • Bailey pony truss: 1 (0.2%)
      • Double-intersection Warren pony truss: 2 (0.4%)
      • Howe pony truss: 3 (0.5%)
      • Kingpost pony truss: 1 (0.2%)
      • Lattice pony truss: 1 (0.2%)
      • Lenticular pony truss: 3 (0.5%)
      • Parker pony truss: 1 (0.2%)
      • Polygonal Warren pony truss: 2 (0.4%)
        • Polygonal Warren pony truss with all verticals: 1 (0.2%)
      • Pratt pony truss: 4 (0.7%)
      • Truesdell pony truss: 1 (0.2%)
      • Warren pony truss: 8 (1.4%)
        • Warren pony truss with alternating verticals: 4 (0.7%)
        • Warren pony truss with no verticals: 1 (0.2%)
        • Warren pony truss with all verticals: 2 (0.4%)
    • Through truss: 191 (34.4%)
      • Baltimore through truss: 18 (3.2%)
      • Bowstring through truss: 3 (0.5%)
      • Burr arch-truss: 1 (0.2%)
      • Childs through truss: 1 (0.2%)
      • Double-intersection Warren through truss: 5 (0.9%)
      • Howe through truss: 6 (1.1%)
      • Lattice through truss: 35 (6.3%)
        • Quadrangular lattice through truss: 1 (0.2%)
        • Town lattice truss: 31 (5.6%)
      • Lenticular through truss: 5 (0.9%)
      • Long through truss: 6 (1.1%)
      • Multiple Kingpost through truss: 5 (0.9%)
      • Other through truss: 2 (0.4%)
      • Paddleford through truss: 16 (2.9%)
      • Parker through truss: 7 (1.3%)
      • Pennsylvania through truss: 4 (0.7%)
      • Pratt through truss: 29 (5.2%)
      • Queenpost through truss: 3 (0.5%)
      • Warren through truss: 27 (4.9%)
        • Warren through truss with alternating verticals: 1 (0.2%)
        • Warren through truss with no verticals: 2 (0.4%)
        • Warren through truss with all verticals: 14 (2.5%)
      • Whipple through truss: 2 (0.4%)

  • Unknown: 7 (1.3%)