All You Need to Know About I-39

I-39 is a north-south route that goes through Wisconsin and Illinois, connecting cities like Madison and Rockford.
Written by Kate Kirby
Reviewed by Jessica Barrett
Interstate 39 Highway (I-39) is a 306.14-mile-long north-south route that goes through
Wisconsin
and
Illinois
Bypassing traffic in major metros like Milwaukee and Chicago, I-39 is a great way to travel between Wisconsin and Illinois. This route goes through cities like
Madison
, WI and
Rockford
, IL, and offers quite a few fun things to do and see such as museums, skiing, and botanical gardens. 
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What is an interstate highway?

An interstate is a roadway that is a part of a large network of highways that connect major cities throughout the United States.  
A numbering system is used to identify the interstates. You can tell which direction an interstate goes by looking at whether the number is odd or even. An odd-numbered interstate like I-39 runs north-south and even-numbered interstates run east-west. Generally, the number is one or two digits and is considered more significant if it ends in a zero or five. 

What states does I-39 run through?

I-39 stretches 306.14 miles and connects cities like Madison, WI and Rockford, IL. Here’s the ground that this interstate covers in each state: 

Major interchanges on I-39

While the route along I-39 is mostly rural, it does go through some large cities and has a good amount of major interchanges to be aware of. Here’s what you’ll need to look out for:
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Best places to eat along I-39

There’s nothing like some great food to fill you up while on a long road trip and there are certainly some tasty options along I-39. Check out these highly-recommended food stops: 
  • Red Eye Brewing Company
    (Wausau, WI): Artisan food, craft beer, an open kitchen, and a casual atmosphere makes Red Eye a great pit stop. You’ll find them open every day except Sundays. 
  • Back When Cafe
    (Wausau, WI): This quaint cafe has been serving its dishes farm-to-table style since 1991. The high ceilings and urban-rustic feel make the Back When Cafe a perfect place to relax and refuel. 
  • Thrive Foodery
    (Wausau, WI): Thrive’s food is locally-sourced with the freshest ingredients. They offer a range of dishes from Mediterranean Nachos to Loaded Mac. Stop in Wednesday through Saturday from 4:30 pm to 8:30 pm. 
  • Los Potrillos
    (Normal, IL): If you’re in the mood for Mexican food, Los Potrillos is your place! Check out their daily lunch and drink specials for a great deal. 
  • Imperial Buffet
    (Normal, IL): With over 200 food options including American, Japanese, Italian, and Chinese cuisine, the Imperial Buffet has something for everyone. Dine-in or carryout from 11 am to 9 pm any day. 
Pro Tip Plan ahead and double-check the hours that your restaurant of choice is open. It’d be disappointing to accidentally show up to a great restaurant 15 minutes before they close. 

What is there to do on I-39?

Traveling through two states and some large cities, there’s an abundance of fun things to do while road tripping along I-39. 
Check out these places worth visiting:

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