Never had an issue with low bridges wherever I wanted to take the trailer anywhere in Canada.
Generally I have found the roads to be better in Canada than the US, especially eastern US.
Carry adaptors to step your 50amp right down to 20amp (the genny adaptor). If on 20amp service be sure to put water heater on propane, turn the fridge AC circuit breaker off, turn the microwave breaker off & turn the air conditioning breaker off. This way those who don't understand power cannot turn something on that will trip the shoreside breaker.
Wish you luck when dealing with the French. They seem to have forgotten that the British won the war 200 years ago. The attitude of just one CG operator has kept us from returning to Quebec.
For a really great experience go to Newfoundland. It is like a whole different country. Wonderful people there, even if they are a bit difficult to understand sometimes.