Peoria County Highway R18 runs for aprox. four (4) miles, west of Brimfield in western Peoria County. This links the Village of Elmwood to a interchange with Interstate 74. PCH R18 does not pass through any towns in Peoria County. PCH R18 intersects the following local roads in Peoria County. U.S. Rt. 150, near Brimfield. Interstate 74, near Brimfield. Peoria County Highway D30, near Brimfield. Illinois State Route 8, near Elmwood.
