Website Statistics

All Bridges

Total listed bridges: 85,614
Bridges with photos: 54,748 (63.9%)
Bridges with Street View: 29,810 (34.8%)
Bridges with GPS coordinates: 84,981 (99.3%)
Total photos: 419,332

Extant Bridges

Extant bridges: 52,358 (61.2% of all)
Bridges with photos: 32,752 (62.6% of extant)
Bridges with Street View: 25,115 (48.0% of extant)
Bridges with GPS coordinates: 52,178 (99.7% of extant)

Lost Bridges

Lost bridges: 31,524 (36.8% of all)
Bridges with photos: 15,989 (50.7% of lost)
Bridges with GPS coordinates: 31,148 (98.8% of lost)

By Design

Arch: 12,675 (14.8%)
- Deck arch: 11,877 (13.9%)
  - Brick arch: 94 (0.1%)
  - Closed-spandrel arch: 4,106 (4.8%)
  - Corrugated multi-plate arch: 14 (0.02%)
  - Iron arch: 17 (0.02%)
  - Luten arch: 94 (0.1%)
  - Open-spandrel arch: 799 (0.9%)
  - Ribbed closed-spandrel arch: 30 (0.04%)
  - Steel arch: 397 (0.5%)
  - Stone arch: 3,288 (3.8%)
  - Timber arch: 19 (0.02%)
- Pony arch: 64 (0.07%)
  - Concrete pony arch: 52 (0.06%)
  - Timber pony arch: 7 (0.008%)
- Through arch: 450 (0.5%)
  - Concrete through arch: 120 (0.1%)
  - Iron through arch: 3 (0.004%)
  - Marsh arch: 56 (0.07%)
  - Network arch: 10 (0.01%)
  - Steel through arch: 220 (0.3%)
  - Timber through arch: 22 (0.03%)
Beam: 14,527 (17.0%)
- Stringer: 10,709 (12.5%)
  - Concrete stringer: 622 (0.7%)
  - Steel stringer: 6,038 (7.1%)
  - Timber stringer: 2,997 (3.5%)
- Concrete tee beam: 3,289 (3.8%)
Culvert: 1,446 (1.7%)
- Concrete culvert: 639 (0.7%)
- Stone culvert: 337 (0.4%)
Ferry: 209 (0.2%)
Floating: 42 (0.05%)
- Pontoon: 41 (0.05%)
Rigid frame: 749 (0.9%)
- Concrete rigid frame: 644 (0.8%)
- Steel rigid frame: 83 (0.10%)
Girder: 10,197 (11.9%)
- Deck girder: 5,362 (6.3%)
  - Concrete deck girder: 514 (0.6%)
  - Deck plate girder: 4,568 (5.3%)
- Pony/through girder: 3,952 (4.6%)
  - Concrete pony/through girder: 361 (0.4%)
  - Concrete curved chord through girder: 81 (0.09%)
  - Pony/through plate girder: 3,317 (3.9%)
Other: 955 (1.1%)
Slab: 2,110 (2.5%)
Suspension: 928 (1.1%)
- Eyebar suspension: 16 (0.02%)
- Self-anchor suspension: 5 (0.006%)
- Cable-stayed: 104 (0.1%)
- Wire suspension: 718 (0.8%)
Truss: 38,033 (44.4%)
- Bedstead pony truss: 541 (0.6%)
  - Bedstead double-intersection Warren pony truss: 72 (0.08%)
  - Bedstead Pratt pony truss: 360 (0.4%)
  - Bedstead Warren pony truss: 108 (0.1%)
- Deck truss: 1,827 (2.1%)
  - Deck arch-truss: 8 (0.009%)
  - Bailey deck truss: 5 (0.006%)
  - Baltimore deck truss: 36 (0.04%)
  - Canticrete deck truss: 2 (0.002%)
  - Double-intersection Warren deck truss: 88 (0.1%)
  - Fink deck truss: 9 (0.01%)
  - Howe deck truss: 65 (0.08%)
  - K-deck truss: 3 (0.004%)
  - Lattice deck truss: 33 (0.04%)
  - Lenticular deck truss: 4 (0.005%)
  - Other deck truss: 27 (0.03%)
  - Pegram deck truss: 2 (0.002%)
  - Pratt deck truss: 365 (0.4%)
  - Queenpost deck truss: 4 (0.005%)
  - Scissors deck truss: 1 (0.001%)
  - Warren deck truss: 591 (0.7%)
    - Warren deck truss with alternating verticals: 81 (0.09%)
    - Warren deck truss with no verticals: 6 (0.007%)
    - Warren deck truss with sub-panels: 9 (0.01%)
    - Warren deck truss with all verticals: 103 (0.1%)
  - Whipple deck truss: 26 (0.03%)
  - Wichert deck truss: 4 (0.005%)
- Half-through truss: 14 (0.02%)
  - Lenticular half-through truss: 1 (0.001%)
  - Pratt half-through truss: 7 (0.008%)
- Modern truss: 127 (0.1%)
  - Modern deck truss: 1 (0.001%)
  - Modern pony truss: 81 (0.09%)
    - Modern bowstring pony truss: 7 (0.008%)
    - Modern Parker pony truss: 4 (0.005%)
    - Modern polygonal Warren pony truss: 27 (0.03%)
    - Modern Pratt pony truss: 16 (0.02%)
    - Modern Warren pony truss: 19 (0.02%)
  - Modern through truss: 43 (0.05%)
    - Modern bowstring through truss: 3 (0.004%)
    - Modern polygonal Warren through truss: 11 (0.01%)
    - Modern Pratt through truss: 7 (0.008%)
    - Modern Warren through truss: 18 (0.02%)
- Pony truss: 16,334 (19.1%)
  - Bailey pony truss: 177 (0.2%)
  - Miller & Borcherding pony truss: 18 (0.02%)
  - Bowstring pony truss: 352 (0.4%)
  - Double-intersection Warren pony truss: 133 (0.2%)
  - Eiffel pony truss: 1 (0.001%)
  - Howe pony truss: 79 (0.09%)
  - Kingpost pony truss: 113 (0.1%)
  - Lane pony truss: 6 (0.007%)
  - Lattice pony truss: 28 (0.03%)
  - Lenticular pony truss: 99 (0.1%)
  - Other pony truss: 45 (0.05%)
  - Parker pony truss: 384 (0.4%)
  - Polygonal Warren pony truss: 692 (0.8%)
    - Polygonal Warren pony truss with alternating verticals: 218 (0.3%)
    - Polygonal Warren pony truss with no verticals: 13 (0.02%)
    - Polygonal Warren pony truss with all verticals: 74 (0.09%)
  - Post pony truss: 3 (0.004%)
  - Pratt pony truss: 2,939 (3.4%)
  - Half-hip Pratt pony truss: 593 (0.7%)
  - Queenpost pony truss: 175 (0.2%)
  - Truesdell pony truss: 20 (0.02%)
  - Vierendeel pony truss: 3 (0.004%)
  - Warren pony truss: 3,365 (3.9%)
    - Warren pony truss with alternating verticals: 785 (0.9%)
    - Warren pony truss with no verticals: 68 (0.08%)
    - Warren pony truss with all verticals: 479 (0.6%)
- Through truss: 18,779 (21.9%)
  - Baltimore through truss: 342 (0.4%)
  - Bollman through truss: 15 (0.02%)
  - Bowstring through truss: 351 (0.4%)
  - Brown through truss: 4 (0.005%)
  - Burr arch-truss: 918 (1.1%)
  - Camelback through truss: 398 (0.5%)
  - Childs through truss: 15 (0.02%)
  - Double-intersection Warren through truss: 184 (0.2%)
  - Eiffel through truss: 1 (0.001%)
  - Fink through truss: 10 (0.01%)
  - Hammond through truss: 9 (0.01%)
  - Haupt through truss: 9 (0.01%)
  - Howe through truss: 632 (0.7%)
  - Inverted bowstring through truss: 7 (0.008%)
  - K-Parker through truss: 73 (0.09%)
  - K-Truss through truss: 16 (0.02%)
  - Kingpost through truss: 93 (0.1%)
  - Lattice through truss: 774 (0.9%)
    - Quadrangular lattice through truss: 184 (0.2%)
    - Quintangular lattice through truss: 1 (0.001%)
    - Town lattice truss: 453 (0.5%)
    - Triple-intersection lattice through truss: 36 (0.04%)
  - Lenticular through truss: 89 (0.1%)
  - Lenticular Warren through truss: 5 (0.006%)
  - Long through truss: 75 (0.09%)
  - Multiple Kingpost through truss: 207 (0.2%)
  - Other through truss: 31 (0.04%)
  - Paddleford through truss: 63 (0.07%)
  - Parker through truss: 1,389 (1.6%)
  - Partridge through truss: 10 (0.01%)
  - Pegram through truss: 26 (0.03%)
  - Pennsylvania through truss: 585 (0.7%)
  - Polygonal Warren through truss: 465 (0.5%)
    - Polygonal Warren through truss with alternating verticals: 56 (0.07%)
    - Polygonal Warren through truss with no verticals: 4 (0.005%)
    - Polygonal Warren through truss with sub-panels: 17 (0.02%)
    - Polygonal Warren through truss with all verticals: 133 (0.2%)
  - Post through truss: 49 (0.06%)
  - Pratt through truss: 6,152 (7.2%)
  - Queenpost through truss: 222 (0.3%)
  - Smith through truss: 74 (0.09%)
  - Stearns through truss: 2 (0.002%)
  - Thacher through truss: 17 (0.02%)
  - Waddell "A" through truss: 7 (0.008%)
  - Warren through truss: 1,652 (1.9%)
    - Warren through truss with alternating verticals: 47 (0.05%)
    - Warren through truss with no verticals: 31 (0.04%)
    - Warren through truss with sub-panels: 76 (0.09%)
    - Warren through truss with all verticals: 444 (0.5%)
  - Wheeler through truss: 1 (0.001%)
  - Whipple through truss: 441 (0.5%)
Tunnel: 1,356 (1.6%)
Unknown: 2,387 (2.8%)

© Copyright 2021, Historic Bridge Foundation and contributors.
This page's URL is http://bridgehunter.com/nation/statistics/