Data · dataset · 2026
Tunnels by NHS and State
Listed in U.S Department of Transportation
This summary tables provides annual counts of tunnels on and off the National Highway System (NHS) by States and territories beginning in 2018.
Links
Get the data
- CSV data.transportation.gov/api/views/ka9m-ar5q/rows.csv?accessType=DOWNLOAD ↗
download · from data transportation gov
Where it is published
- U.S Department of Transportation dataset page data.transportation.gov/Roadways-and-Bridges/Tunnels-by-NHS-and-State/ka9m-ar5q ↗
landing page · from data transportation gov
Catalogue records · 1
- SODA API data.transportation.gov/resource/ka9m-ar5q.json ↗
metadata API · from data transportation gov
Topics
- Stated by source
- Roadways and Bridges
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| U.S Department of Transportation | ka9m-ar5q | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data transportation gov | connector:data_transportation_gov@1.0.0 | |
| concepts[topic].socrata_category:data_transportation_gov:roadways-and-bridges | source · data transportation gov | connector:data_transportation_gov@1.0.0 | |
| created_date | source · data transportation gov | connector:data_transportation_gov@1.0.0 | |
| description | source · data transportation gov | connector:data_transportation_gov@1.0.0 | /resource/description |
| license_text | source · data transportation gov | connector:data_transportation_gov@1.0.0 | |
| publication_date | source · data transportation gov | connector:data_transportation_gov@1.0.0 | |
| title | source · data transportation gov | connector:data_transportation_gov@1.0.0 | /resource/name |
| updated_date | source · data transportation gov | connector:data_transportation_gov@1.0.0 |