The 54 foot wide roadbed is divided into four lanes. Two carry northbound vehicles and two carry southbound vehicles. The Mackinac is a toll bridge, with a per-axle charge applied at toll booths that sit on each approach to the bridge. Physical Education: promote physical development, enhance physical fitness, the imparting the workout of knowledge, technology and skills, cultivate morality and the will of the quality of the education process. Is an important part of the education and training is an important aspect of the comprehensive development of talent.