Need a tower built within Eustis, Maine. similar to the Verona bridge. How much will it cost? Yes, a tower, to reside in, equal shape and size as the...

Yes, a tower, to reside in, equal shape and size as the Verona Narrows bridge towers in knox county. No internal elevator required. Will inevitability to know what company will do it, how long it may take and the price. The parkland is solidly underpinned with granite and a road will want to be cut in to a mountain dell.
Answers:    OK, you have a few problems here. First, it's the Penobscot Narrows Bridge, not the Verona Narrows Bridge. Second, the bridge is mostly contained by Waldo County (with a small piece in Hancock County).

Third, you will not plausible be allowed by the town you want to build your tower in to build such a structure. (A house that's more than 400 foot tall isn't going to fly beside any town or city here in Maine, trust me.)

Fourth, you're looking at several million dollars' worth of expenses, from soil sample, to materials to basic keeping. The Penobscot Narrows Bridge cost $85 million. Figure on a quarter of that, including the legal fees to appeal the building contract denial.
Why are you asking this on Answers? If you REALLY want an answer then you will necessitate to contact an ARCHITECTURAL firm because the plans will have to be approved by the State

What are you smoking?