The sensors were installed in the summer of 2009 to monitor tension in the bridge's suspension cables, wind loading and deck vibrations.
这些传感器在2009年夏天安装在这座大桥上，用以监测大桥的吊索紧危状态，风负荷和桥面振动。
For example, we were the first suspension bridge to have to change the roadway deck.
比如，它是首座需要变换车道的悬索桥。
According to Leonard, the composite concrete deck is also economical for triple-span cable-stayed suspension bridges, but only for those with a center span of up to 700 meters.
里奥哈特认为，组合混凝梁土对于三跨距的悬索拉桥来说也是十分经济的，不过仅限于中心跨度为700米以内的拉桥。
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