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Welcome to Maryland One! A one stop shop for all your Hauling Permits in Maryland! _____________________________________ **Updated auto issue threshold- we have updated the auto issue threshold from 200k to 225k, and from 120'L to 139'L, loads up to including 225k, 14'W, 14'6"H, and 139'L with a passing route may now move 24/7 with authorization and escorts when required. Always read your permit. **The Hauling Permit Office will be CLOSED Monday, October 12th for Columbus Day. Please plan accordingly, email haulingpermits@mdot.maryland.gov with any questions. 05-13-2026-Frederick County- Please contact Frederick County office at heavyhauls@frederickcountymd.gov for approval to travel on Frederick County roads, they must be notified at least 3-5 business days prior to the transportation date for scheduling purposes. A County permit may be required. Your patience is appreciated as we work with our county offices to be incorporated into our Maryland One System.