I drove the new bridge from Crown Point New York to Chimney Point Vermont last weekend. It's a brand new and attractive structure, engineered to last 100 years and outlive the predecessor bridge, which didn't even last 80 years. You can see the new bridge here http://www.champlainbridgecommunity.org/
If you are like me, you'll enjoy the bridge, but I had eyes for the Cottonwoods, which are immediately to the right. This picture indicates, and my observations indicated, that the tops of these trees are actually right about level with the deck of this enormous bridge. On closer inspection, the grand cottonwood there appeared like and old growth tree. The trunk was twisty, the cracks were long and spiral, the roots buttressed and the bark was shaggy, peeling, old, weathered and trippy.
The hotel in Chimney Point played host to Thomas Jefferson and James Madison in 1791. My guess is that Lake Champlain was lined with Cottonwoods then, and some of those trees might still be standing tall.