Wisconsin Highway 100

State Trunk Highway 100
Route information
Maintained by WisDOT
Length:	39.7 mi[1] (63.9 km)
Major junctions
South end:	WIS 32 in Oak Creek
	I-41 / I-94 in Oak Creek US 45 / WIS 36 in Franklin I-43 / US 45 in Hales Corners I-94 in West Allis US 18 in Wauwatosa US 45 in Wauwatosa US 45 in Milwaukee I-41 / WIS 175 in Milwaukee I-41 / US 45 / WIS 74 in Menomonee Falls
North end:	I-43 / WIS 32 in Bayside
Location
Counties:	Milwaukee, Waukesha
Highway system
Wisconsin State Trunk Highway System Interstate U.S. State Scenic Rustic ← WIS 98 WIS 101 →

State Trunk Highway 100 (STH 100, commonly known as Highway 100 or WIS 100) is a road which encircles the outer edges of Milwaukee County. Officially, the road is designed as a bypass around the city of Milwaukee, but with residential and commercial development along Highway 100 on almost all portions of the road, this purpose has been negated, and it serves as one of the Milwaukee area's major commercial corridors. Highway 100 roughly parallels the freight railroad beltway around Milwaukee constructed in 1912 by the Chicago and North Western Transportation Company, approximately one mile inside the north, west and south county lines.

In Milwaukee's immediate western suburb Wauwatosa, Highway 100's north–south segment was once known as Lovers Lane; parts of the road still have this designation. In the vicinity of Mayfair Shopping Center, it is known as Mayfair Road; this corresponds to 108th street in Milwaukee's numbered roadways scheme.

The roadway served the Muirdale Tuberculosis Sanatorium and County Airfield and Limestone Quarry at what is now Currie Park. In the late 1950s, due to the combination of ready roadway and rail access, the area experienced an employment boom as several large cold storage warehouses and food-related truck terminals were constructed nearby. With the development of the Mayfair Shopping Center in 1958 by malting scion Kurtis Froedtert, the name was changed to Mayfair Road. One of the few vestiges of this earlier era is the roadway's popularity as a "cruising strip" for exhibition motorists. Many signs posted at various intervals on light posts in the median state that it is unlawful to pass a controlled point more than three times in West Allis, which can result in a fine.

Inexpensive land and burgeoning growth in western Milwaukee County and the adjacent Waukesha County have served to create a new edge city commercial center centered on this busy arterial. Mayfair Shopping Center remains a key component of this area. With the privatization and redevelopment of the County Grounds including Muirdale and the expansion of Froedtert Hospital and the Medical College of Wisconsin there will be increasing pressure to develop the last large parcels of adjacent privately owned open space in the area; and there will likely be additional traffic pressures placed on this onetime Lovers Lane.

Major intersections

County	Location	mi	km	Exit	Destinations	Notes
Milwaukee	Oak Creek				WIS 32 – Milwaukee, Racine
					I-41 / I-94 / US 41 – Milwaukee, Chicago
	Franklin				US 45 south / WIS 36 – Burlington	Southern end of US 45 overlap
				—	Rawson Avenue (CTH-BB)	Interchange
	Hales Corners				WIS 24 (Janesville Road)
	Greenfield				I-43 north / US 45 north to I-894	Northern end of US 45 overlap; no access to southbound I-43 or from northbound I-43
					Layton Avenue (CTH-Y) to I-43 south	Completes access to I-43
	West Allis				WIS 59 (Greenfield Avenue)
					I-94 – Milwaukee, Madison
	Wauwatosa				US 18 (Bluemound Road)
					I-41 north / US 45 north	Northbound entrance only; no exit ramps
					WIS 190 (Capitol Drive)
	Milwaukee			46	I-41 south / US 45 south / CTH-E (Silver Spring Drive)	Southern end of I-41 / US 45 overlap
				47A	US 41 south / WIS 175 north (Appleton Avenue)	Southern end of US 41 overlap; no northbound access from southbound roadways
				47B	Good Hope Road
Milwaukee–Waukesha county line	Milwaukee–Menomonee Falls line			48	WIS 145
Waukesha	Menomonee Falls			50A	I-41 north / US 41 north / US 45 north – Fond du Lac	Northern end of I-41 / US 41 / US 45 overlap
Waukesha–Milwaukee county line	Menomonee Falls–Milwaukee line				WIS 145 south
Milwaukee	Milwaukee				WIS 181 (76th Street)	Interchange
	Brown Deer				WIS 57 (Green Bay Road)	Interchange
	River Hills–Bayside– Fox Point tripoint				I-43 / WIS 32 – Milwaukee, Green Bay
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

References

External links

• WIS 100 Terminus Photos
• Sandler, Larry (2005-05-16). "The Road Warrior: Solving the mystery of city's many Highway 100s". Milwaukee Journal Sentinel. Retrieved 2009-07-28.