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


Entry-Level Driver Training for Commercial Driver’s License

Please read the information provided regarding Entry-Level Driver Training for Commercial Driver’s License and please visit for more information.


FMCSA PIN Consolidation

FMCSA PIN Consolidation has taken place to the USDOT, MC and MX PINs into one USDOT PIN and that the MC/MX Docket No. PINs are no longer valid. See the FAQ for further information.

FMCSA Expands Drug and Alcohol Clearinghouse FAQs

FMCSA updated its frequently asked questions (FAQs) related to the drug and alcohol clearinghouse.

Electronic Logging Devices

Visit the link above to view information regarding Electronic Logging Devices and Frequently Asked Questions.

Fraudulent and Misleading Marketing to New FMCSA Applicants

Unified Registration System (URS)

FMCSA changes are going to impact all carriers with a USDOT number.

Please visit the following link to learn more regarding the changes:

Update FMCSA Motor Carrier ID Report

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.

Regardless if the company operation type is listed as Intrastate or as an Interstate carrier, Montana has adopted the federal regulations, therefore, all carriers must do their biennial updates per the filing schedule shown below. Filing schedule. Each motor carrier or intermodal equipment provider must file the appropriate form at the following times:

  • Before it begins operations; and
  • Every 24 months, according to the following schedule:
USDOT No. ending in: Must file by last day of:
1 January
2 February
3 March
4 April
5 May
6 June
7 July
8 August
9 September
0 October

If the next-to-last digit of its USDOT Number is odd, the motor carrier or intermodal equipment provider shall file its update in every odd-numbered calendar year. If the next-to-last digit of the USDOT Number is even, the motor carrier or intermodal equipment provider shall file its update in every even-numbered calendar year.

For further information visit FMCSA Updating Your Registration or Authority.