Kentucky Derby visitors can save $2 in tolls per crossing by opening a prepaid RiverLink account.
Three of the five bridges connecting Louisville and Southern Indiana are now tolled.
Tolling started late last year on the new I-65 Abraham Lincoln Bridge, the improved I-65 Kennedy Bridge and the new SR 265 Lewis and Clark Bridge connecting Prospect, Kentucky and Utica, Indiana.
RiverLink is all-electronic tolling, with no stopping, no slowing, no lines and no coin machines.
Toll rates range from $2-$12, depending on the size of the vehicle.
Drivers with prepaid accounts and transponders pay the lowest toll rates.
The difference is $2 per crossing.
It costs $2 to cross a tolled bridge in a passenger vehicle with a prepaid account and transponder and $4 without.
Drivers can open a prepaid RiverLink account to pay the lowest toll rates, or travel the bridges without a prepaid account and wait for an invoice in the mail.
Find more information on RiverLink tolling, including answers to frequently-asked questions, click here.