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    "311/380",
    "311/381",
    "312/371",
    "312/372",
    "312/373",
    "312/381",
    "313/369",
    "313/370",
    "313/371",
    "313/372",
    "314/369",
    "314/370",
    "314/372",
    "315/369",
    "315/370",
    "316/365",
    "316/366",
    "316/367",
    "316/368",
    "316/369",
    "316/370",
    "317/358",
    "317/361",
    "317/364",
    "317/365",
    "317/370",
    "317/371",
    "318/358",
    "318/363",
    "319/363",
    "62/449",
    "63/449",
    "63/450",
    "66/451",
    "70/454",
    "85/290",
    "87/288",
    "91/267",
    "92/268"
  ],
  "crossings": 76955,
  "reported": 62081,
  "bridgeSpecific": 51830,
  "roadWide": 10415,
  "inventory": {
    "source": "FHWA National Bridge Inventory",
    "year": 2025,
    "sourceUrl": "https://www.fhwa.dot.gov/bridge/nbi/2025allstatesallrecsdel.zip",
    "structures": 89007,
    "matchedCrossings": 1816,
    "ambiguousCrossings": 310,
    "meaning": "Measured minimum vertical underclearance (item 54B) for the highway beneath; not a posted limit. FHWA cautions against using it alone for route clearance."
  },
  "meaning": "Reported OSM road attributes at road/bridge intersections with separate levels. Record edit dates are not survey dates. Missing records do not establish clearance."
}