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含有轻骨料的混凝土既能用于桥梁结构的主要部件,又能用于直接承受车辆荷载的桥面结构。这两点已被美国土木工程建筑实践所证明。最初,这些工程项目主要用于洪水控制、通航和水力发电,但它也就包括了用于桥梁建筑的可能性。跨越科德角运河,架有两座几乎等高度的桥梁,通过这两座桥梁,车辆可通向马萨诸塞州的科德角。每座桥均为4车道的固结钢桁拱。
Concrete containing lightweight aggregate can be used both for the main components of the bridge structure and for the bridge deck structure that receives the vehicle load directly. These two points have been the United States civil engineering construction practice proved. Initially, these projects were mainly used for flood control, navigation and hydroelectric power, but it also included the possibility of building bridges. Across the Cape Cod Canal, there are two almost equal height of the bridge, the two bridges, the vehicle can lead to Cape Cod, Massachusetts. Each bridge is a four-lane consolidated steel truss arch.