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Bridges & Structures

Download NBI ASCII files

The following data sets represent bridge data submitted annually to FHWA by the States, Federal agencies, and Tribal governments in accordance with the National Bridge Inspection Standards and the Recording and Coding Guide for the Structure Inventory and Appraisal of the Nations Bridges (.pdf, 0.8 mb). Each data set is submitted in the spring, and may be corrected or updated throughout the year. The data is considered final and is published on this website at the end of each calendar year.

Note on saving data files:

Some of the data files are large and can take some time to load. After you click on the link, please make sure the file is loaded before saving. Below are examples of a file loading and a file completely loaded.

Note on importing the data:

Notes on using the data:

  1. The NBI data should not be used for route clearance purposes. In general, bridges are required to be inspected every 24 months so data displayed could have changed
  2. After downloading the data you will need to distinguish the subset of "highway bridges". To obtain this set items 5a=1; 49>=6.1meters; 112=Y and 42a=1 or 4 or 5 or 6 or 7 or 8.
  3. To make data use easier starting in 2013 only highway bridges are written to the download file. An additional status field was also added (see record layout)
  4. All data in the inventory and operating fields is downloaded in metric tons even if rating factor is indicated. The factor was converted to metric tons.
PDF files can be viewed with the Acrobat® Reader®
Updated: 09/27/2016
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