| State: | WI |
| Type: | WI |
| Route: | 165 |
| Map Custom: | yes |
| Map Notes: | WIS 165 highlighted in red |
| Length Mi: | 6.7 |
| Length Round: | 1 |
| Direction A: | West |
| Direction B: | East |
| Terminus A: | in Pleasant Prairie |
| Terminus B: | in Pleasant Prairie |
| Counties: | Kenosha |
| Previous Type: | WI |
| Previous Route: | 164 |
| Next Type: | WI 1949 |
| Next Route: | 166 |
State Trunk Highway 165 (STH-165, commonly known as Highway 165 or WIS 65) is a highway in far southeastern Wisconsin connecting Pleasant Prairie, south of Kenosha, with Interstate 94/Interstate 41/US Highway 41 (I-94/I-41/US 41); the roadway continues westward as County Trunk Highway Q (CTH-Q) until it ends at US 45 near Pikeville. The areas served by this connecting route are a commercial area near the Interstate which is adjacent to a growing industrial park between the Interstate and WIS 31 (Green Bay Road) to the east; and a predominantly residential area between WIS 31 and WIS 32 (Sheridan Road) near the shore of Lake Michigan.
WIS 165 runs east-west in Pleasant Prairie. Between its eastern terminus at WIS 32 and WIS 31, it is an undivided highway. West of WIS 31, it becomes a multi-lane divided highway until its western terminus at an interchange with I-41/I-94/US 41. West of I-41/I-94/US 41, it continues west as CTH-Q.[1]
The first WIS 165 in Wisconsin was a short connector between US 41 and WIS 55 in the present-day village of Germantown in 1926. In 1953, the designation was removed from this stretch of highway when the US 41/US 45 concurrency was routed to its present alignment.
Before it was numbered as a Wisconsin Highway, much of the current WIS 165 was designated as CTH-Q.[2] A section near the Des Plaines River was constructed in 1988. The current WIS 165 was numbered in 1990, the same year nearby WIS 174 was decommissioned.[3] [4] In 2017, the section between Corporate Drive and Terwall Terrace was widened to four lanes, making all of the highway west of WIS 31 four lanes.[5] [6]
In 2006-2007, the Wisconsin Department of Transportation (WisDOT) conducted a study to evaluate the impacts of widening WIS 165 between WIS 31 and WIS 32 to a four-lane road with the intention of improving traffic flow and safety.[7] The study recommended the section be widened to four lanes and roundabouts be constructed at three intersections.[8]