Montana Oversize
Permits & Escorts

MONTANA OVERSIZE PERMITS & ESCORTS INFORMATION
Important! We are not a permit service.  We do not arrange permits for carriers.  The following is for informational purposes only.  Always read your permits and provisions sheets carefully. We cannot guarantee the accuracy of the information provided.
Montana DOT Phone Number
406-444-7262

Permits

Montana oversize permits are valid for three to five days

Operating Time

[Detailed operating time information]

Restricted Travel

[Detailed restricted travel information]

Legal Dimensions

  • Length: 53′ semi-trailer, 75′ maximum length if trailer exceeds 53′ or if there is any rear overhang. Overhang: Overall length including overhang up to and including 75′ is legal. Over 75′ needs permit.
  • Width: 8′-6”
  • Height: 14′
  • Weight: 80,000 Gross
  • Single – 20,000
  • Tandem – 34,000
  • Tridem – 42,000
  • Routine Permit Limits

  • Length: 150′
  • Width: 18′
  • Height: 17′
  • Weight: [Depends on spacings]
  • Single – 24,000
  • Tandem – 48,000*
  • Tridem – 62,700*
  • Escorts

  • On Interstate Highways:
  • Length: Over 120′ – one escort
  • Width: Over 16′-6″ – one escort
  • Height: Not usually required, but over 17′ may depend on route, and over 16′ may have two-lane detours.
  • On two-Lane Highways:
  • Length: Over 110′ – one escort
  • Width: Over 12′-6″ – one escort, Over 14′ – two escorts
  • Height: Over 17′ – one escort with high pole
  • Weight: Over 54,300 – 55,000 on a Tridem (varies with spacings) – two escorts (DW21 Conditions).
  • Signs, Flags & Lights

    [Detailed signs, flags and lights information]

    Seasonal Load (Weight) Restrictions

    Spring thaw restrictions may occur on some routes approximately February through May. Interstate routes are usually not affected.

    Contact us.

    Thank you! Your submission has been received!
    Oops! Something went wrong while submitting the form.
    GET IN TOUCH WITH US

    We care more and work harder.

    With over 10 years of experience in the industry, we have developed a reputation for excellence in providing our clients with reliable, cost-effective, and innovative logistics solutions.

    Freight Stack is pleased to partner with WEL Companies of De Pere, Wisconsin. We couldn't be happier with the support WEL Companies provides to us and our customers. WEL Companies has been in business since 1962 and now boasts over 500 trucks, 700 trailers, 7 terminals and cross docks throughout the United States. By partnering with WEL Companies we are able to focus on our business of brokering freight

    Let's Chat