Roads of the Mid-South & West > Highways of the State of Wisconsin > Interstate 43, Wisconsin


Interstate 43 is a north-south highway that spends about half its life going east-west. This route runs from Green Bay to Beloit, via. Milwaukee. Originally, plans were for either I-57 or I-794 to run from Chicago to Green Bay. While planning got staled and Interstate 43 was designated between Green Bay and Milwaukee. Later the highway was extended to Beloit.

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In Wisconsin, I-43 is multi-plexed.

I-43 is multi-plexed with...
...U.S. Rt. 45, at Greenfield.

...Interstate 894, at Milwaukee.

...Interstate 94, at Milwaukee.
...U.S. Rt. 41, at Milwaukee.
...Wisconsin State Route 32, from Milwaukee to near Port Washington.

...Wisconsin State Route 57, from Milwaukee to near Fredonia.

...Wisconsin State Route 32, from near Port Washington to near Cedar Grove.

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Interstates that I-43 crosses in Wisconsin.

Interstate 90, at Beloit.
Interstate 39, at Beloit.

NB I-39/90 at I-43.
Interstate 894, at Milwaukee.

BGS on SB I-43/WB I-894 in Greenfield.

BGS on SB I-43/WB I-894.

SB I-43/WB I-894 at their split in Greenfield.

Overhead guide markers on NB I-43/U.S. Rt. 45.

NB I-43/U.S. Rt. 45 at I-894.

Overhead sign on NB I-43.
Interstate 94, at Milwaukee.

NB I-43/I-894 near I-94 in Milwaukee. (DEC. 2002)

NB I-43 at I-94 in Milwaukee. (DEC. 2002)

BGS on NB I-43/EB I-894. (Sept. 2003)

Overhead sign on NB I-43/EB I-894. (Sept. 2003)

NB I-43/EB I-894 at I-94/U.S. Rt. 41. (Sept. 2003)
Interstate 894, at Milwaukee.
Interstate 794, at Downtown Milwaukee.

NB I-43, WB I-94 near I-794 in Downtown Milwaukee. (DEC. 2002)

BGS on NB I-43/WB I-94/NB U.S. Rt. 41. (Sept. 2003)

NB I-43/WB I-94/NB U.S. Rt. 41 near I-794. (Sept. 2003)

NB I-43/WB I-94/NB U.S. Rt. 41 at the Marquette Interchange.

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There are no branches on I-43 in Wisconsin.

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NB I-43 near Darien.

NB I-43 near WI St Rt 67.

A BGS on SB U.S. Rt. 12.

NB I-43 in rural Waukesha County.

This is a junction sign on SB WI St Rt 83 in Mukwanago.

SB I-43 near New Berlin.

SB I-43 near Hales Corners.

NB I-43 at Layton Ave in Metro-Milwaukee.

Guide signs on NB I-43/EB I-894 in Milwaukee.

Guide markers in Greenfield.

Guide markers in Milwaukee.

A set of old guide markers on Wisconsin Ave in Downtown Milwaukee. (October, 2004)

A guide marker on WI St Rt 57/167.

A guide marker on Ozaukee County Highway C.

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