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States Beginning With M

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  • Maine
    771 bridges
  • Maryland
    5,527 bridges
  • Massachusetts
    5,314 bridges
  • Michigan
    1,188 bridges
  • Minnesota
    11,969 bridges
  • Mississippi
    16,823 bridges
  • Missouri
    24,654 bridges
  • Montana
    5,122 bridges
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Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 13, 2026

Data sources

Plainbridges synthesizes data from these public-domain federal sources:

  • FHWA National Bridge Inventory — annual delimited state files — fhwa.dot.gov/bridge/nbi.cfm
  • FHWA Recording & Coding Guide (condition rating definitions) — fhwa.dot.gov/bridge
  • U.S. Department of Transportation — transportation.gov
PlainBridge

Bridge safety data for 575,000+ public highway bridges in America. Sourced from the FHWA National Bridge Inventory.

Data: FHWA NBI (updated annually) · Free & ad-supported

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PlainBridge is an independent publisher of U.S. bridge-condition data built from the Federal Highway Administration's National Bridge Inventory. We are not affiliated with the FHWA or any government agency. Spotted a figure that looks wrong? Report a correction.

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