In a news release, the agency says the Tollway Board of Directors' decision was based on speed limit studies. The areas which will see increases for cars are:
The Jane Addams Memorial Tollway (I-90) west of the I-39 interchange in Winnebago County (15 miles).
The Reagan Memorial Tollway (I-88) west of Route 47 in Kane, DeKalb, Ogle and Lee counties (64 miles).
The Tri-State Tollway (I-94/I-294/I-80) north of Stearns School Road in Lake County (pending speed limit increase on I-94 in Wisconsin) (6 miles).
The higher speed limit on the northern portion of the Tri-State Tollway, and an 8-mile segment of I-88 in Kane County extending west of Route 47 to the DeKalb County border, will apply only to passenger and commercial vehicles weighing no more than 8,000 pounds. The speed limit for larger trucks on those two segments will remain at 55 mph.
The move comes after Governor Quinn signed a bill raising speed limits on rural interstates to 70mph. The tollway operates independently of the Illinois Department of Transportation and had to approve the increases on the sections of interstate highways it operates.