Rules & Regulations Mackinac Bridge MBA Board Meet the Board Members Schedules, Agendas, and Minutes About MBA Press Releases Frequently Asked Questions Tower Tour Certificates Career Opportunities Location Kids Corner History The “Mighty Mac” Facts & Figures History of the Bridge Historical Construction Album Michigan State Ferry Album In Memory Of Events Event Schedule Annual Bridge Walk Projects Dirty Jobs 2007 Links of Interest Photo Galleries Shop Mackinac Bridge Posters Token Gift Packs / Medallion Mackinac Bridge Books & DVD’s Tolls & Traffic Toll Schedule Transport Services Rules & Regulations Oversized and Heavy Vehicle Escorts Current Conditions Monthly Traffic Statistics Bridge Cam MACPASS MacPass Website MacPass Frequently Asked Questions MacPass Information MacPass Toll Account Agreement Mackinac Bridge Authority N 415 I-75 St Ignace, MI 49781 (906) 643-7600 Thursday, Apr 23 - 1:10 PM All Clear, Have a Pleasant Trip! Full condition report Tolls & Traffic Toll Schedule Transport Services Current Bridge Conditions Rules & Regulations Monthly Traffic Statistics Bridge Cam Thursday, Apr 23 - 1:10 PM All Clear, Have a Pleasant Trip! Full condition report Check out our views of the Bridge Rules & Regulations Maximum speed limit is 45 mph. No U-turns. No stopping on the Mackinac Bridge. In the event of a flat tire or motor failure, please remain in your vehicle. Bridge personnel on duty will investigate and assist. Use four-way flashers while vehicle is disabled. Truck Regulations Travel in right lane – no passing. 500-foot spacing – no tailgating. Use four-way flashers. Maximum speed is 20 mph for vehicles exceeding 30 tons (60,000 lbs.). Rules Enforced from toll plaza to Jamet Street exit. Trucks with a gross load of over 40 tons must request escort prior to crossing. Maximum allowable vehicle weight is 72 tons. Placarded Loads Transportation of flammable liquids, liquid gases, explosives and other placarded loads requires an escort by bridge personnel. Persons transporting these loads must call Bridge Services at 906-643-7600 for escort. Oversized Vehicles Oversized vehicles must call 24 hours in advance to arrange a bridge escort. Other restrictions may be in effect due to weather conditions or construction projects. Please tune to 530 or 1610 am radio while in the Straits area. Copyright © 2026 Produced by Michigan Digital