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Fond du Lac Freeway

State Trunk Highway 145 marker

State Trunk Highway 145
Route information
Maintained by WisDOT
Length: 23.9 mi (38.4 km)
Major junctions
South end: US 18 in Milwaukee
  I-43 in Milwaukee
I-41 / US 45 / WIS 100 in Milwaukee
North end: I-41 / US 41 / US 45 / CTH-FD in Germantown
Location
Counties: Milwaukee, Waukesha, Washington
Highway system
WIS 144 WIS 146

State Trunk Highway 145 marker

State Trunk Highway 145 (STH 145, commonly known as Highway 145 or WIS 145) is a road which connects the northwest suburbs of Milwaukee with the city's downtown. For much of its route, the highway is known as Fond du Lac Avenue.

Up until the fall of 2009, Highway 145's northern terminus was at the freeway interchange with US-41 in Richfield. A project involving the construction of five roundabouts in a less than one mile span has truncated the highway's northern terminus to the freeway interchange with US-45, with the stretch of roundabouts between US-41 and US-45 now designated as County Highway FD. Highway 145 travels generally southeast through Germantown as a secondary highway. Upon reaching Menomonee Falls, the road expands into a four-lane boulevard for just over one mile (1.6 km), straddling the Waukesha and Milwaukee County line before intersecting with US-41/45 again.

At this point, the road heads into the city limits of Milwaukee and becomes a freeway, officially known as the Fond du Lac Freeway, though this term is rarely used locally. Although it was originally planned to continue into the heart of downtown, the freeway ends after just under five miles (8 km) at which point it intersects with 68th Street and Hampton Avenue. Highway 145 continues as Fond du Lac Avenue into downtown. It is a four-lane boulevard until Burleigh Street, at which point it becomes a four-lane urban arterial. It becomes a four-lane boulevard again at 20th Street until its intersection with Sixth Street. A major interchange at I-43 is just past the intersection with Walnut Street. Highway 145 turns south onto Sixth Street before terminating at the intersection with US-18 (Wells Street), adjacent to the Frontier Airlines Center convention hall.


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