US 41 was later rerouted in 1999 when the proposed plan to widen Layton Boulevard was successfully blocked by residents and city officials. Because Layton would no longer meet state highway standards, US 41 was rerouted to follow I-94. The section of the Stadium Freeway south of I-94 was given the WIS 341 designation in August 1999.
The relocation of US 41 in 1999 was prompted by the rejection of a plan to widen Layton Boulevard. This resulted in the rerouting of US 41 along I-94 and the designation of a portion of the Stadium Freeway as WIS 341.