Plymouth Police Department works with nearby Hennepin County law enforcement partners, including surrounding agencies such as Maple Grove and Minnetonka, as well as the Minnesota State Patrol on impaired-driving enforcement efforts. Extra DWI patrols are often emphasized during higher-risk evening, weekend, and holiday periods, with enforcement activity focused along major travel and commercial corridors, including I-494, Highway 55, U.S. 169, Rockford Road/County Road 9, and the I-494/Highway 55 interchange area near Plymouth’s business, retail, restaurant, and hotel districts.