2025-22192Notice

Feds Refresh GPS Routes for Trucks Hauling Radioactive Hazards

Published Date: 12/8/2025

Notice

Summary

Starting December 8, 2025, the National Hazardous Materials Route Registry updates the official list of roads where trucks can safely carry dangerous stuff like radioactive and other hazardous materials. This affects truck drivers, state and tribal governments, and anyone involved in moving these materials, making sure routes are clear and safe. These changes keep everyone on the right path and help avoid costly detours or accidents.

Analyzed Economic Effects

4 provisions identified: 2 benefits, 2 costs, 0 mixed.

NHMRR Updated From State/Tribal Reports

Starting December 8, 2025, FMCSA published revisions to the National Hazardous Materials Route Registry based on State and Tribal reports submitted from April 1, 2024 through March 31, 2025. The update republishes current designated and restricted roads used for moving Class 7 radioactive and other hazardous materials so truck drivers and shippers know which routes are allowed or restricted.

Michigan Restricts Ambassador Bridge for Several Classes

On August 29, 2024, Michigan updated a Route Order so the Ambassador Bridge (Detroit, from Porter St. to Canada/Windsor) now has restrictions for classes 1, 6.2, and 7 hazardous materials. That means shipments of those classes are restricted on that bridge segment.

District of Columbia Adds Route Order 'C' (Restriction 0)

A new Route Order Designator "C" was added for the District of Columbia and assigned a "0" restriction ("0" = ALL Hazardous Materials). The entry added I-295 Oxon Run SE from Oxon Run Creek to I-695 with an April 2, 2024 designation date.

California Adds Preferred Routes for Radioactive Shipments

On March 20, 2024 California added Route Order Designators "O" and "P" and assigned both a "P" designation (Preferred Route for Class 7 radioactive materials). The listings cover State Route 58 from Barstow (Interstate 15) to State Route 223, and State Route 223 from State Route 58 to Interstate 5 in Kern County.

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Key Dates

Published Date
12/8/2025

Department and Agencies

Department
Independent Agency
Agency
Transportation Department
Federal Motor Carrier Safety Administration
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