In Florida yes. The roof was installed and then the track substructure installed whilst the lower walls were missing for access. The track went in as the walls were mostly installed.
Remember, the Orlando building is a monster. A triumph of engineering like they used to build. A massive enclosed space. Two roller coasters. The interweaved queue and exit lines, load and unload, offices, workshops, plus the upper level WEDway track complete with storage siding and maintainence bays. They needed a roof to protect from the climate before all that was installed, not to mention the safety of having huge overhead precast concrete panels fixed safely in place first.
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