Frontage road system to provide access to traffic during construction of the Illinois Route 390 Tollway between I-290 and York Road.

Traffic shifts are scheduled to begin at the end of August to move traffic onto a new frontage road system along Thorndale Avenue between I-290 and York Road to allow for the construction of the new Illinois Route 390 Tollway east toward O’Hare International Airport.

As part of the Illinois Route 390 Project, the Illinois Tollway is improving and constructing new local access roads along Thorndale Avenue, including a new system of frontage roads. New frontage roads will accommodate local traffic and will provide existing businesses and residential areas with access to the new Illinois Route 390 Tollway.

Electronic message signs and construction signage will be put in place in advance to alert drivers to dates and times for the scheduled traffic shifts. The traffic shifts are necessary to provide a work zone that safely accommodates the construction of the new roadway. All work is weather dependent.

Beginning Saturday, August 27, eastbound Thorndale Avenue traffic is scheduled to be shifted onto the new frontage road located to the south of the existing roadway. Westbound Thorndale Avenue traffic will continue to travel along a portion of the existing Thorndale Avenue, with the exception of the segment between Supreme Drive and Illinois Route 83, which will be shifted north onto the new westbound frontage road...