U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


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Bridges & Structures

 

Tables of Frequently Requested NTI Information

The following links utilize tunnel data submitted annually to FHWA by the States, Federal agencies, and Tribal governments in accordance with the National Tunnel Inspection Standards and the Specifications for the National Tunnel Inventory. Each dataset is submitted in the spring, and may be corrected or updated throughout the year. The data for all public highway tunnels are considered final and are published on this website at the end of each calendar year.

  • Tunnel Counts By State, HTML | XLS
  • Tunnel Counts By Owner, HTML | XLS
Updated: 03/04/2021
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000