Is there currency exchange on the US side of the bridge coming in to US?

No you have to do it at duty free

No,

Yes but it will cost you do it at a duty free station

The previous answers are all correct

Make a pit stop at the duty free shop. I always make a stop there when i am exchanging currency.

Go to Envoy exchangr on Garrison Rd they exchange the current rate duty free is about 6 percent lower