Around the lakes is beautiful! Colors are changing and all in that area. And since you love bridges,don't miss the Mackinac Island Bridge in northern Michigan. That area is called the "U-P" upper peninsula.
Mackinac Island has no "gasoline vehicles" allowed on the island.
Buffalo NY area is cool with Niagra and all.
The "Thousand Lakes area" in northern New York (another area to re-enter the States from Canada) was my favorite. Also has one of those steel bridges that are "see thru" and is "kinda high" in the sky.
Many folks on bikes are afraid to cross this bridge on a bike,too scary!!! C-YA!!!!!