Starting May 1, 2015 commercial vehicle toll rates for the Ambassador Bridge will be adjusted to between $4.50 CND and $6.75 CND per axle, depending on the weight class of vehicle.
Also, effective June 1, a $6.75-fee plus applicable tolls per trip will be charged for all non-active DIBC/CTC account holders.
Click here for the official memo from the bridge company: Ambassador Bridge rate adjustment_public