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FHA National Tunnel Inventory

Principal Investigator(s):  View help for Principal Investigator(s) DOT Federal Highway Administration

Version:  View help for Version V1

Name File Type Size Last Modified
  nti 10/14/2025 07:57:PM

Project Citation: 

DOT Federal Highway Administration. FHA National Tunnel Inventory. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-10-14. https://doi.org/10.3886/E238841V1

Project Description

Project Title:  View help for Project Title FHA National Tunnel Inventory
Summary:  View help for Summary The following datasets represent 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 public highway tunnels is considered final and is published on this website by June 15th of each calendar year.
Original Distribution URL:  View help for Original Distribution URL https://www.fhwa.dot.gov/bridge/inspection/tunnel/inventory/download.cfm

Scope of Project

Subject Terms:  View help for Subject Terms usa; government services; transport infrastructure; tunnels; government inventory; fha; dot
Geographic Coverage:  View help for Geographic Coverage USA (All States)
Time Period(s):  View help for Time Period(s) 3/1/2018 – 6/15/2025
Universe:  View help for Universe Tunnels from all US states under the umbrella of the Federal Highway Administration from States, Federal Agencies and Tribal governments
Data Type(s):  View help for Data Type(s) observational data; text


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Published Versions

V2 [2025-10-30]

V1 [2025-10-14]

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DDI 2.5

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