Elkhart County Road 17 (CR 17) is a north–south artery in Elkhart County, Indiana. It is currently undergoing improvements to become a four lane divided road with non-limited traffic. Elkhart County Road 17 starts at the state line, connecting with state highway M-217 in Michigan. The roadway crosses into Indiana and becomes Elkhart County Road 17. Currently the improved section of CR 17 ends between CR 40 and CR 38 (CR 17 continues south in its original configuration, as part of Elkhart County's grid-numbered county road system, becoming North County Road 200 West at the Kosciusko County border). The portion of CR 17 between U.S. Route 20 and the Indiana Toll Road (Interstate 80/90) is part of the National Highway System, the only county highway in Indiana on the system.