Interstate 43


I-43 is a relatively short interstate located in Wisconsin, which connects Green Bay to Milwaukee and then Beloit on the Wisconsin - Illinois border. It is completely confined within the borders of Wisconsin. It is mostly a north-south interstate, though the southern part from Milwaukee to Beloit runs diagonally across the lower part of the state in a northeastern - southwestern direction.

I-43 is the 29th shortest interstate in the United States, at approximately 192 miles of road.

Its southern end terminates just outside of Beloit on the northeast side, where it merges into I-90 and I-39. Its northern end terminates on the northern side of Green Bay, at the same junction where I-41 turns into Highway 41.

Attractions Near I-43

The upper half of I-43 runs right alongside Lake Michigan, and passes through some great small towns along the way. Some of these towns include Sheboygan and Port Washington (where the 90s sitcom Step By Step was set).

The lower half passes through some great places too, and even a spooky one! There have been a number of sightings of a supposed werewolf in Elkhorn, Wisconsin, a town that I-43 runs straight through. Be sure to take extra care if you find yourself passing through!

Below are a few attractions if you find yourself traveling this highway and are in search of some fun things to do:

  • Lighthouses of Door County* Door County, WI
  • Green Bay Packers Hall of Fame and Lambeau Field Atrium Green Bay, WI
  • Brett Favre Steakhouse Green Bay, WI
  • Bay Beach Amusement Park Green Bay, WI
  • National Railroad Museum Ashwaubenon, WI
  • Above and Beyond Children's Museum Sheboygan, WI
  • Milwaukee Public Museum Milwaukee, WI
  • Mitchell Park Horticultural Conservatory Milwaukee, WI
  • War Memorial Center and Lakefront Area Milwaukee, WI
  • Retzer Nature Center** Waukesha, WI
  • The Elegant Farmer Mukwonago, WI
  • Beckman Mill Beloit, WI


Construction of I-43 was started in the early to mid 1960s. The southern portion from Milwaukee to Beloit was completed in 1976, and the northern portion was completed in 1981, finalizing the route from Green Bay to Beloit.

States I-43 Travels Through

I-43 runs its course entirely within the state of Wisconsin. Would a suitable nickname be "The Dairy Interstate", or is that a little too simple?

  • Wisconsin

I-43 Major Cities

While I-43 only passes through one major metropolitan area, there are several smaller noteworthy communities along its route. Here they are from north to south:

  • Green Bay, Wisconsin
  • Sheboygan, Wisconsin
  • Port Washington, Wisconsin
  • Milwaukee, Wisconsin
  • Beloit, Wisconsin

Major Connections & Interchanges

  • Green Bay, WI I-41 S to Appleton, WI
  • Milwaukee, WI I-41 N to Fond Du Lac, WI I-94 E to Chicago, IL I-94 W to Madison, WI
  • Beloit, WI I-90 W to Madison, WI I-90 E to Chicago, IL



Miles:192 Miles

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