Montana Department of Transportation

Malcolm “Mack” Long, Director


View the Governor’s Coronavirus Task Force site for more information.

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Motor Carrier Services

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I-15 Emergency Detour: There will be an emergency detour on north bound I-15 MM 364 near Shelby. detour details

Diesel Fuel Users: Please be advised that the National and State Covid-19 Emergency Declaration does not include the ability to use non-taxed diesel fuel (dyed diesel) in motor vehicles traveling on public roads and highways. Using dyed diesel on Montana roadways could be result in a penalty not to exceed $1,000.00 for a first offense and $5,000.00 for a second offense.

USDOT Number updates: needed for Intrastate and Interstate carriers, this is a free service that is done by FMCSA and MCS/MDT. You will not receive calls from either entity requesting money to update this for you. If you receive a call from someone offering to do this for you for compensation, this is a scammer. To update your information, please see our FMCSA Page

Bridge Structure Management System (SMS) will soon transition to a new end user platform. Anticipated go live date is November 15, 2021. Users will need an Okta single sign on account to use the new system. Data on the old system will be available for viewing for a short time, but data will not be updated. Contact the Bridge Management Engineer at 406-444-9219 with any immediate concerns.

MCS Content

ePART Tips, Account Assistance, Application, Third-Party, Questions, Route / Road Conditions, Payment Types, Draft Permit, FMCSA

Online Carriers

Have your user name and password already? Login to ePart

ePART Tips

Please see our ePART Helpful Tips for further guidance.

ePART Account Assistance

Do you have an ePART account already and need assistance with your password? Send an email to or call 406-444-7638 to request a password reset or to report a change in your Email Address.

  • Include in the email:
    • Company Name
    • USDOT Number
    • Account Number
    • Contact Name
    • Email address
    • Phone Number
  • Make sure that you have some sort of identification in your signature template area on your email for MDT’s confirmation.
  • For your protection, we deactivate accounts with invalid email addresses.

Apply Today for a MT Online ePART Account!

The Montana Department of Transportation, in cooperation with Celtic Systems, developed a new electronic Permitting, Auditing, Registration, and Tax System (ePART).

For further information, and to apply for an online account, please visit

Be sure to read all sections: Welcome; Important; Get started; and the Instructions / Why Apply?

This may take a day; or a few days to have the account set up – depending on what we see. If you believe that you should have received an email from MDT, please check your spam/junk folder as we have noticed that the emails from have been going there.

Are you a Third-Party User?

Need Assistance or Have Questions?

Call Motor Carrier Services in Helena, MT, we are in the office 7:30 am until 5 pm, Monday through Friday (except holidays).

  • Permitting: 406-444-7262;
  • For Superload questions: 406-444-7262 press 4;
  • IRP / IFTA: 406-444-2998;
  • IFTA Filing and Fuel Tax: 406-444-7664;
  • For all other questions: 406-444-6130;
  • More contact information

A reminder to check your route for your Permits

When you begin issuing your own permits, it is important to remember your responsibility to check construction reports and load-speed restrictions to verify that the route you plan to take does not have unanticipated restrictions.

Check Road Conditions | Montana Road Report Map

Payment Types accepted!

Electronic Checks; Visa, MasterCard, American Express, and Discover are accepted as Online payments types.

  • Electronic Checks have a $1.19 transaction fee added onto the price of the transaction.
  • The credit card fee of 3% plus a $1.19 transaction fee is being passed onto the carrier along with the price of the permit / credential. This will be noticed at the time of processing the payment.
  • The receipt will print out with your permit after payment has been completed and show the additional fees.
    • If the payment receipt is printed from the payment screen, please continue with the permit to finalize.

Please see ENTERING EPART PAYMENTS USING PAYZANG document for assistance in processing payments.

Draft Permit

The purpose behind a draft permit is to allow the customer to see if they can utilize a MT permit before paying for it. This would be beneficial such as when bidding a job to see how much a permit would cost before proceeding. (Please note the cost listed).

To get to a draft permit, the user will work up the permit until the Billing page. At the bottom on of the screen, instead of clicking Proceed to finalize the permit, the user would click the Draft Permit button.

This will bring up a copy of the permit (permit number is VOIDVOID). No amount is shown on the draft permit.

Is your federal information up-to-date?

To avoid unnecessary delays with MCS, please make sure that your information on the FMCSA Motor Carrier Unified Registration System is current. MCS does reference this information when a new account is set-up; and/or periodically as needed. Discrepancies between information provided to MCS and what shows up in the federal system, will slow down MCS processes.

If your business has changed its Company Name, USDOT number, TIN (Tax Identification number), and/or mailing or physical address, please make sure to update your forms on the FMCSA site. After this has been completed, please notify MCS at 406-444-6130 so that MCS can keep your account information updated on our MCS systems.

For further information visit Update FMCSA Motor Carrier ID Report.