Lake County’s 2040 Transportation Plan
(The following text and maps are as published in Lake County’s 2040
Plan, June 2014)
The Roadway Network Explained
Toll Highway Authority (ISTHA) or the Illinois Department of Trans-
portation (IDOT) - and extend entirely through the county (for
example, I-94). Primary arterial highways, which carry regional traffi c,
crisscross the county and generally extend beyond county borders.
These highways are under the jurisdiction of IDOT (examples are US
Between 2010 and 2040, the estimated number of peak period trips Route 45, IL Route 22). County highways, which are the responsibility
generated in Lake County is expected to increase by 36%. In order of Lake County, go through municipalities and function as a second-
to address the defi ciencies in the roadway network and meet the ary arterial highway system - collecting traffi c and distributing it to
increased capacity demand, a number of baseline improvements the primary arterial highway system, i.e. state roads. Township routes
were previously planned and are set for construction in the near- are local roads in unincorporated areas providing direct access to
term. In addition to these improvements, the 2040 Plan recommends individual properties; they are usually short in length. Streets on the
a variety of roadway improvements including roadway widening, municip