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Bridges — FHWA National Bridge Inventory: Condition, Posting & Clearance

FHWA bridge inventory: 624,193 bridges, condition, posting, clearance. 8 tools, free, no key.

First seen 25 Oct 2026. Evidence as of 25 Oct 2026.

8
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen

Tools

ToolDescriptionBehaviour
find_low_clearance_bridgesBridges in a state whose vertical clearance is at or below max_height_m. Default clearance is over the roadway on the bridge (NBI Item 10); set under=true for the clearance under the bridge (Item 54B), which is what matters for routes passing beneath. Sentinel 'no restriction' values are excluded.Not declared
get_bridgeGet one bridge by its FHWA structure number (Item 8). Structure numbers are unique within a state; pass state to be exact. Returns the full decoded record.Not declared
get_county_summariesPer-county bridge counts for a state, with Poor-condition and posted/closed counts per county.Not declared
get_state_summaryBridge summary for one state: total bridges, counts by condition (Good/Fair/Poor), posted and closed counts, scour-critical count, average year built, total deck area. Without a state, returns per-state totals with condition counts for all states.Not declared
get_worst_bridgesThe worst-rated bridges in a state (condition = Poor), ordered by lowest component rating then age. State is required. Use for 'worst bridges in X' questions.Not declared
list_bridges_in_countyList bridges in one county (state + 3-digit FIPS county code), paged.Not declared
list_posted_or_closed_bridgesBridges in a state that are load-posted or closed to traffic (NBI Item 41 status P/R/K), worst condition first. Relevant for routing and heavy-haul feasibility — but per FHWA, NBI data must not be used as the sole source for route clearance; inspections can be up to ~24 months old.Not declared
search_bridgesSearch US bridges in the FHWA National Bridge Inventory. Scope with state, county (3-digit FIPS code), and/or condition (Good/Fair/Poor); optional filters: posting_status (open/posted/closed/not_yet_open), owner_code, scour_critical, year_min/year_max, min_adt, route, and q (text match on facility carried, feature crossed, location). Returns decoded records with condition rollup, posting status, clearances, and labels.Not declared

Change history

  1. Listed (registry)
Source listings
SourceListingFirst seenLast seenVersions
Official MCP Registrylink.morningbrief/bridges25 Oct 202625 Oct 20261