Looks like last friday they filed an obstruction evaluation with the FAA for a 868-foot tower crane for the American side. They give the schedule for the crane as being from March 22, 2019 to September 16, 2020. So, we have a schedule for tower construction, at least on the Detroit side.
Also, it seems the 800+ feet number was for another design they were considering, but didn't end up going with. I wrote the bridge authority, and they said the current design is only 220 meters (722 feet).
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Where the trees are the right height
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