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The Transport of Hazardous Materials Across our Toll Facilities

Code of Maryland Regulations (COMAR) govern the transport of hazardous materials across our toll facilities. Under these regulations, vehicles carrying bottled propane gas in excess of 10 pounds per container (maximum of 10 containers), bulk gasoline, explosives, significant amounts of radioactive materials, and other hazardous materials are prohibited from using the Fort McHenry Tunnel (I-95) or the Baltimore Harbor Tunnel (I-895). The Francis Scott Key Bridge (I-695, the Baltimore Beltway) is a convenient alternative route for crossing Baltimore's Harbor.

Visit the Division of State Documents' website at to view the actual COMAR regulations: Title 11, Subtitle 7, Chapter 1 (11.07.01).

Oversize and/or Overweight Permit Process

Beginning May 1, 2009, the State Highway Administration (SHA) will administer a $25 permit fee on behalf of the Maryland Transportation Authority for the use of Authority maintained roadways. The $25 fee will cover all Authority roadways that may be used on the vehicle's identified permit route. The fee is applicable to the permit only and does not apply to any tolls incurred. SHA will also be administering the engineering fee for superload moves on Authority roadways to further enhance the permit process. When applicable, the Authority engineering fee will be assessed by SHA and appear on the permit as part of the total cost. These fees will be in addition to any fees already imposed by SHA for the use of state highways it maintains and will be assessed on any permits for travel scheduled May 1 or later.

In addition, the current Class 7 toll will be eliminated effective May 1, 2009. Drivers who previously were charged a Class 7 toll will be charged a lower toll based on the number of vehicle axles. This allows for a single point of contact for permit requests and affords these drivers the convenience of E-ZPass for toll payment. These changes are part of the Authority's cost-recovery initiative that was approved Jan. 29, 2009, and will allow for a more effective hauling-permit system to process oversize and/or overweight vehicles traveling on State maintained and Authority owned roadways. The new fee structure will help ensure the Authority continues to maintain safe and efficient facilities for its commercial-vehicle customers.

Visit SHA's Commercial Vehicle Operations website for more information on hauling permits at


Public Calendar

Jun 01

Capital Committee Meeting - June 1, 2023

9 AM


This public meeting is livestreamed and archived on the Capital Committee Meeting Homepage. The Capital Committee Meeting homepage also provides access to the virtual meeting, schedule, agenda, materials and minutes.

Jun 08

Finance Committee Meeting - June 8, 2023

9 AM

Virtual Teams Meeting

This public meeting is livestreamed and archived on the Finance Committee Meeting Homepage. The Finance Committee Meeting homepage also provides access to the virtual meeting, schedule, agenda, materials and minutes.

Jun 14

Doing Business with the MDTA Development Workshop - Free

9 AM

MDOT Headquarters
Harry Hughes Conference Room
7201 Corporate Center Drive
Hanover, Maryland 21076

Doing Business with the MDTA

Free Development Workshop
Division of Civil Rights & Fair Practices (CRFP)

Wednesday, June 14, 2023
9am to 1pm

  • Free to attend.
  • Network with Primes, MDTA Procurement Officers and MDTA CRFP Compliance Officers.
  • Learn about resources to assist in growing and strengthening your business.
  • Understand the MBE/VSBE/DBE Programs and your role as a prime or subcontractor.

Register on Eventbrite: 
Registration Opens May 1, 2023

Email any questions to:

Additional Information:

To learn more visit:
Getting Your Foot In The Door | MDTA (