Route information | ||||
---|---|---|---|---|
Maintained by IDOT | ||||
Length | 64.90 mi[1] (104.45 km) | |||
Existed | 1926[2]–present | |||
Major junctions | ||||
South end | IL 3 / IL 154 in Red Bud | |||
I-64 / US 50 in Fairview Heights I-55 / I-70 / US 40 in Collinsville I-270 in Glen Carbon | ||||
North end | IL 16 in Royal Lakes | |||
Location | ||||
Country | United States | |||
State | Illinois | |||
Counties | Randolph, Monroe, St. Clair, Madison, Macoupin | |||
Highway system | ||||
| ||||
|
Illinois Route 159 is a north–south state route in southwestern Illinois. Its southern terminus is at Illinois Route 3 and Illinois Route 154 in Red Bud and its northern terminus at Illinois Route 16 in Royal Lakes. This is a distance of 64.90 miles (104.45 km).[1]