Illinois Website Statistics

All Bridges

  • Total listed Illinois bridges: 2,425
  • Bridges with photos: 1,618 (66.7%)
  • Bridges with Street View: 397 (16.4%)
  • Bridges with GPS coordinates: 2,400 (99.0%)

  • Total photos: 10,305

Extant Bridges

  • Extant bridges: 1,725 (71.1% of all)
  • Bridges with photos: 1,347 (78.1% of extant)
  • Bridges with Street View: 359 (20.8% of extant)
  • Bridges with GPS coordinates: 1,719 (99.7% of extant)

Lost Bridges

  • Lost bridges: 657 (27.1% of all)
  • Bridges with photos: 254 (38.7% of lost)
  • Bridges with GPS coordinates: 639 (97.3% of lost)

Oldest Listed Bridges

  1. Old Galena Trail and Coach Rd Bridge (Carroll County, built 1830, abandoned)
  2. Old Stone Arch Bridge (Clark County, built 1837, open to traffic)
  3. Jack's Mill Bridge (Henderson County, built 1846, lost)
  4. I&M Canal Nettle Creek Aqueduct (Grundy County, built 1847, destroyed by flood)
  5. I&M Canal Aux Sable Aqueduct (Grundy County, built 1847, open to traffic)
  6. Wolfe Bridge (Knox County, built 1848, destroyed by fire)
  7. Fountain Creek Bridge (Monroe County, built 1849, open to pedestrians)
  8. Fishers' Point Stone Arch Bridge (Hancock County, built 1850, open to pedestrians)
  9. CN Kelly Road Bridge (Jo Daviess County, built 1853, open to traffic)
  10. CN Carr Road Bridge (Jo Daviess County, built 1853, open to traffic)

By Design

  • Arch: 217 (8.9%)
    • Deck arch: 186 (7.7%)
      • Brick arch: 1 (0.04%)
      • Closed-spandrel arch: 85 (3.5%)
      • Open-spandrel arch: 23 (0.9%)
      • Ribbed closed-spandrel arch: 2 (0.08%)
      • Steel arch: 6 (0.2%)
      • Stone arch: 47 (1.9%)
    • Pony arch: 1 (0.04%)
      • Concrete pony arch: 1 (0.04%)
    • Through arch: 12 (0.5%)
      • Marsh arch: 1 (0.04%)
      • Steel through arch: 11 (0.5%)

  • Beam: 378 (15.6%)
    • Stringer: 308 (12.7%)
      • Concrete stringer: 4 (0.2%)
      • Steel stringer: 218 (9.0%)
      • Timber stringer: 74 (3.1%)
    • Concrete tee beam: 51 (2.1%)

  • Culvert: 16 (0.7%)
    • Concrete culvert: 7 (0.3%)
    • Stone culvert: 5 (0.2%)

  • Ferry: 7 (0.3%)

  • Rigid frame: 9 (0.4%)
    • Concrete rigid frame: 9 (0.4%)

  • Girder: 452 (18.6%)
    • Deck girder: 176 (7.3%)
      • Concrete deck girder: 11 (0.5%)
      • Deck plate girder: 158 (6.5%)
    • Pony/through girder: 232 (9.6%)
      • Concrete pony/through girder: 93 (3.8%)
      • Pony/through plate girder: 137 (5.6%)

  • Other: 71 (2.9%)

  • Slab: 122 (5.0%)

  • Suspension: 18 (0.7%)
    • Self-anchor suspension: 1 (0.04%)
    • Cable-stayed: 3 (0.1%)
    • Wire suspension: 13 (0.5%)

  • Truss: 1,083 (44.7%)
    • Bedstead pony truss: 28 (1.2%)
      • Bedstead double-intersection Warren pony truss: 2 (0.08%)
      • Bedstead Pratt pony truss: 19 (0.8%)
      • Bedstead Warren pony truss: 7 (0.3%)
    • Deck truss: 58 (2.4%)
      • Baltimore deck truss: 1 (0.04%)
      • Double-intersection Warren deck truss: 2 (0.08%)
      • Howe deck truss: 2 (0.08%)
      • Lattice deck truss: 2 (0.08%)
      • Pratt deck truss: 11 (0.5%)
      • Warren deck truss: 9 (0.4%)
      • Whipple deck truss: 2 (0.08%)
    • Modern truss: 6 (0.2%)
      • Modern through truss: 3 (0.1%)
        • Modern bowstring pony truss: 2 (0.08%)
        • Modern polygonal Warren pony truss: 1 (0.04%)
      • Modern through truss: 3 (0.1%)
        • Modern bowstring through truss: 3 (0.1%)
    • Pony truss: 502 (20.7%)
      • Bailey pony truss: 1 (0.04%)
      • Miller & Borcherding pony truss: 2 (0.08%)
      • Bowstring pony truss: 6 (0.2%)
      • Double-intersection Warren pony truss: 10 (0.4%)
      • Howe pony truss: 2 (0.08%)
      • Kingpost pony truss: 7 (0.3%)
      • Lattice pony truss: 4 (0.2%)
      • Pratt pony truss: 109 (4.5%)
      • Half-hip Pratt pony truss: 16 (0.7%)
      • Queenpost pony truss: 3 (0.1%)
      • Warren pony truss: 38 (1.6%)
        • Warren pony truss with alternating verticals: 14 (0.6%)
        • Warren pony truss with no verticals: 1 (0.04%)
        • Warren pony truss with all verticals: 3 (0.1%)
    • Through truss: 488 (20.1%)
      • Baltimore through truss: 2 (0.08%)
      • Bowstring through truss: 7 (0.3%)
      • Burr arch-truss: 6 (0.2%)
      • Camelback through truss: 7 (0.3%)
      • Double-intersection Warren through truss: 1 (0.04%)
      • Hammond through truss: 1 (0.04%)
      • Howe through truss: 7 (0.3%)
      • K-Truss through truss: 1 (0.04%)
      • Lattice through truss: 20 (0.8%)
        • Quadrangular lattice through truss: 13 (0.5%)
        • Triple-intersection lattice through truss: 1 (0.04%)
      • Other through truss: 2 (0.08%)
      • Parker through truss: 34 (1.4%)
      • Pennsylvania through truss: 14 (0.6%)
      • Polygonal Warren through truss: 24 (1.0%)
        • Polygonal Warren through truss with sub-panels: 2 (0.08%)
        • Polygonal Warren through truss with all verticals: 9 (0.4%)
      • Pratt through truss: 200 (8.2%)
      • Warren through truss: 70 (2.9%)
        • Warren through truss with no verticals: 1 (0.04%)
        • Warren through truss with sub-panels: 4 (0.2%)
        • Warren through truss with all verticals: 9 (0.4%)
      • Whipple through truss: 7 (0.3%)

  • Tunnel: 9 (0.4%)

  • Unknown: 43 (1.8%)