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A crawlerway is a specially prepared dual roadway providing access for the crawler-transporter to the launch pads, arming tower parking areas, and the Vertical Assembly Building. The roadway is designed to support 7.9 million kg. The two lanes are spaced on 27-meter centers to match the tractor units, and each lane is 12 m wide. The crawlerway has a 5% grade approaching each pad.

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