nbi.infrastructure.search

io.github.whiteknightonhorse/apibase · Verify this server

Search the National Bridge Inventory (NBI) for highway bridges in a US state, with optional filter by overall condition (Good / Fair / Poor). Returns up to 200 bridges per call, sorted by lowest sufficiency rating first. Each result includes: structure number, location, feature below (river/road), facility carried, coordinates, year built/reconstructed, overall bridge condition, deck/superstructure/substructure ratings (0–9 scale), operating load rating (tons), max span length (m), deck width (m), average daily traffic, open/posted/closed status, sufficiency rating, and scour-critical classification. Covers 621,000+ bridges on public roads across all 50 states plus territories. Data: FHWA NBI as of June 2023, updated annually. No auth required — USDOT public domain.