The 2,005 local census lists a population of 7,410. In addition, there are roughly 500,000 people using the ferry every year that go between the town and the airport. Actually, the family who runs the ferryboat would be against the bridge - they charge $5 per person and $6 per vehicle each way, and they are currently the only way between the airport and town, so they have a stranglehold on the business.
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Actually, the island is uninhabited. It's Ketchikan that has the 7,420 people.
There are two ferries. Perhaps they belong to the same people, maybe they belong to the State of Alaska.
http://www.youtube.com/watch?v=f6q__0-krUoThat would not be 500,000 people, but 500,000 trips, and as I said, the family with the ferryboat would be against the bridge. It would be a rather long bridge, as long as the Golden Gate, and no one is forcing anyone to live there, ok?
If there are in fact half a million trips across the straits, then perhaps there is enough money for these folks to pay for the bridge themselves, rather than asking Uncle Sugar to do it.
I would imagine that there would also be a toll on the bridge, in addition to its huge cost.