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#1 Federal
Tunnels by NHS and State
- Organization: Department of Transportation
- Dataset Last Updated: May 15, 2026
This summary tables provides annual counts of tunnels on and off the National Highway System (NHS) by States and territories beginning in 2018.
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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 07, 2026 at 03:21 PM

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