On our 16 day Miami to Montreal cruise in 2018 we were having diner at a window table in the MDR, after leaving NYC en route to Boston, and I saw a bridge!
There was not suppose to be any bridges while "Cruising the Atlantic Ocean", as the April 27 day was described in Currents.
Inquiring about the bridge we were informed that Marina was going thru the Cape Cod Canal.
The bridge was quite a surprise!
Also, since the waters of the St. Lawrence River were too high for the Marina to navigate under the bridges to Montreal, the cruise had to end in Trois- Rivi