底特律商业区被高速公路和城市道路所切割,对步行者十分不便。新的步行桥系统把一座大型体育馆(竞技馆)和一幢汽车停车楼联系在一起。它的规划、设计受到地段形状、原有地面交通、建筑物和各种地下设施的严格限制。 The Detroit business district is cut by highways and city roads and is very inconvenient for pedestrians. The new pedestrian bridge system links a large stadium (athletics hall) with a car parking building. Its planning and design are strictly limited by the shape of the site, the original ground transportation, buildings and various underground facilities.