Where can I find National Bridge Inventory data?


There are at least two ways to search the NBI through an official government source rather than an aggregator:

You can access the LTBP InfoBridge: Data map website from the Federal Highway Administration (FHWA).

  • Click the small "Show Bridges" button.
  • There are NBI and NBE (National Bridge Elements) subpages/tabs.
  • One benefit of this source is that, under NBI, then All, the coded fields are spelled out with their descriptions, for example, “Record Type (5A): 1 - On Structure.”

Another way to get to the data is from the BTS National Bridge Inventory GIS site:

  • Dynamically search the National Bridge Inventory by clicking View Map.
  • Zoom in
  • Click a blue dot to see the bridge data.
  • Using the box of data, you can then use the Coding Guide to determine, for example, “RECORD_TYPE_005A: 1” means Route carried "on" the structure.

You may also find the following useful:



  • Last Updated Sep 11, 2023
  • Views 79
  • Answered By Rosalyn Alleman

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