Illinois Route 166 (IL 166) is a
north–south state road in southern
Illinois
Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Rockf ...
,
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
. The route runs from its southern terminus at
U.S. Route 45
U.S. Route 45 (US 45) is a major north-south United States highway and a border-to-border route, from Lake Superior to the Gulf of Mexico. A sign at the highway's northern terminus notes the total distance as .
US 45 is notable for incorporatin ...
in
New Burnside to its northern terminus at
Illinois Route 13
Illinois Route 13 (IL 13) is a major east–west state route in southern Illinois. Illinois 13 has its western terminus at Centreville at Illinois Route 157 and its eastern terminus at the Kentucky state line and the Ohio River, at Kentuck ...
east of
Marion Marion may refer to:
People
*Marion (given name)
*Marion (surname)
*Marion Silva Fernandes, Brazilian footballer known simply as "Marion"
*Marion (singer), Filipino singer-songwriter and pianist Marion Aunor (born 1992)
Places Antarctica
* Mario ...
. Route 166 serves the counties of
Johnson and
Williamson. It is maintained by the
Illinois Department of Transportation
The Illinois Department of Transportation (IDOT) is a state agency in charge of state-maintained public roadways of the U.S. state of Illinois. In addition, IDOT provides funding for rail, public transit and airport projects and administers fuel ...
(IDOT).
Route description
Route 166 begins at a
3-way intersection with
U.S. Route 45
U.S. Route 45 (US 45) is a major north-south United States highway and a border-to-border route, from Lake Superior to the Gulf of Mexico. A sign at the highway's northern terminus notes the total distance as .
US 45 is notable for incorporatin ...
on the east side of
New Burnside. The route heads north from New Burnside, passing through rural Johnson County before crossing into Williamson County. In Williamson County, the highway turns west and passes through
Creal Springs. Route 166 turns north after passing through Creal Springs and continues through farmland until it reaches its northern terminus at a
traffic light
Traffic lights, traffic signals, or stoplights – known also as robots in South Africa are signalling devices positioned at road intersections, pedestrian crossings, and other locations in order to control flows of traffic.
Traffic light ...
-controlled intersection with
Illinois 13, a four-lane divided highway. Illinois 166 is an undivided two-lane road for its entire length.
History
A road connecting Marion to New Burnside was first marked on Illinois highway maps in 1922. Route 166 was designated along its current route in 1924 as a paved road wide connecting New Burnside and Creal Springs. The route was first marked between Route 13 and Creal Springs on the 1929 state highway map; at this point, it had not been paved. By 1931, Route 166 was completed to New Burnside and paved between Route 13 and
Caneyville, a community north of Creal Springs. The 1931 map marked the route as Illinois Route 156 in error. The remainder of the route was paved by 1934.
Major intersections
References
External links
{{Attached KML, display=inline,title
Illinois Highways Page: Routes 161 thru 180Illinois Highway Ends – Illinois Route 166
166
Transportation in Johnson County, Illinois
Transportation in Williamson County, Illinois