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MDOT hosting virtual public hearing for proposed changes to hazardous materials route restrictions on Ambassador Bridge

DETROIT, Mich. - The Michigan Department of Transportation (MDOT) will host a virtual public hearing to address proposed changes to the current non-radioactive hazardous materials (NRHM) route restrictions for the Ambassador Bridge in Detroit.

The Detroit International Bridge Co. has proposed the following changes: retain existing restrictions for Class 1 (explosives), Division 6.2 (infectious substances), and Class 7 (radioactive materials) from transport over the Ambassador Bridge and allow the transport of Class 3 (flammable liquids) and Class 8 (corrosive substances).

The proposed recommendations address public safety while seeking to ensure continuity of movement and not limit or delay the transportation of hazardous materials. MDOT will provide additional information about the proposed changes and continue collecting public input.

MDOT staff
Community stakeholders
Local businesses
Interested residents             

Wednesday, March 20, 2024
5-7 p.m.

The virtual hearing will begin with a presentation, followed by an opportunity for public comment. Register to attend the virtual hearing at

MDOT conducted a study to better understand and evaluate the risks associated with transportation of NRHM on the Ambassador Bridge from Porter Street in Detroit to Canada should any of the existing restrictions be changed. Current NRHM route restrictions for the Ambassador Bridge include Class 1 (explosives), Class 3 (flammable liquids), Division 6.2 (infectious substances), Class 7 (radioactive materials), and Class 8 (corrosive substances). MDOT is the authorized agency responsible for all NRHM routing designations and restrictions or requirements in the state of Michigan.

Attendees who require mobility, visual, hearing, written or other assistance for effective participation should contact Orlando Curry at 517-241-7462 or, preferably at least five business days prior to the scheduled meeting. Forms are located on the Title VI webpage. Requests made after this timeframe will be evaluated and honored to the extent possible.

Public comment:
In addition to the virtual public hearing, written comments can be submitted online, by mail or e-mail to Monica Monsma, public involvement and hearings specialist, at For consideration in the final determination, comments must be received on or before March 23, 2024.

Monica Monsma
MDOT Environmental Services Section
425 West Ottawa St. 
P.O. Box 30050 
Lansing, MI 48909 

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