From the Buffalo News:
If you are paying with American money, tolls will increase by 50 cents for passenger cars on the Rainbow, Whirlpool Rapids and Lewiston-Queenston bridges as of Feb. 1.
For those using Canadian money, rates will remain the same.
The prolonged weakness of the U.S. dollar against other world currencies is the reason for the increase, the first since 1998, according to the Niagara Falls Bridge Commission.