One-way tolls on the Parkway will go from 35 cents to 50 cents.
Electronic message boards on both toll roads are reminding motorists about the increases.
The additional revenue will be used to repay bonds sold to finance past construction projects and to help pay for more than $8 billion in new work.
Three new lanes are planned for the Turnpike between Exits 6 and 8A, and a third lane will be added to the Parkway between Exits 63 and 80.
