The hiatus began Friday at 3 p.m., with IDOT suspending all non-emergency road work. Where possible, all lanes will be open until midnight Monday.
Work zone speed limits are still in effect and motorists are urged to slow down and drive with caution.
IDOT and the Illinois State Police also remind drivers that they should wear their seat belts and be aware that law enforcement will be out in fall force to crack down on impaired drivers and safety belt violators.
"We know that lots of people will be out on the roadways visiting friends during the holiday weekend as they celebrate the traditional end of the summer season," IDOT Secretary Gary Hannig said. "We are suspending construction wherever possible, to keep drivers safe and also to make travel as smooth as possible. IDOT is also working with Illinois State Police and local law enforcement across the state to strictly enforce impaired driving and safety belt laws over the holiday weekend. If you drink, don't drive- and make sure all the passengers in your vehicle are buckled up, every trip, every time."