Illinois Route 23 or State Street runs north-south and is “Main Street” in Marengo. Illinois Route 23 intersects both Illinois Route 176 and U.S. Route 20. The route begins in north of Marengo in Harvard, IL at U.S. Route 14 and runs through Marengo, DeKalb, Ottawa and ends in Pontiac, Illinois. Route 23 has the greatest traffic count in Marengo in the section connecting Illinois Route 176 to U.S. Route 20 in downtown Marengo.
Illinois Route 176 or Telegraph Street begins in Marengo and runs east all the way to Lake Michigan. Illinois Route 176 runs through Crystal Lake, Mundelein, Libertyville and ends in Lake Bluff.
U.S. Route 20 or Grant Highway runs east-west nearly parallel to Interstate 90. The Route runs from Boston, Massachusetts to Newport, Oregon. In Illinois, the route connects Marengo to Galena, Rockford, and Elgin. This route likely has the largest traffic count of people “just passing through” in order to avoid tolls on the Interstate and deal with less traffic. Route 20 runs directly to the Chicago-Rockford International Airport and the 2nd largest UPS shipping hub 30 miles east of Marengo. The closest Interstate Interchange is 7 miles east of Marengo on U.S. Route 20.
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Interstate 90 is the closest interstate to Marengo. An interchange is 7 miles away on U.S. Route 20. This interchange has no toll to get on or get off the interstate. I-90 runs from Seattle, Washington to Boston, Massachusetts. Close by, the Interstate connects Marengo to Downtown Chicago, O’Hare International Airport, Rockford and Madison, WI.
Interstate 39 intersects US Route 20 near Rockford 18 miles west of Marengo. The interstate runs from Bloomington/Normal, Illinois to Wausau, WI. Using this Interstate, some one leaving Marengo could be on six different interstates within three hours to include:
I-55 near Normal, IL
I-80 near LaSalle, IL
I-88 near Rochelle, IL
I-90 near Rockford, IL
I-43 near Beloit, WI
I-94 near Madison, WI
Interstate 43 closest interchange is 25 miles north of Marengo in Wisconsin. This Interstate is contained solely in this state and runs from Beloit to Milwaukee then heads north to end in Green Bay. This interstate runs through the most populated part of Wisconsin.