Iowa State Route 27 runs east-west across Northern and Central Floyd County. From the Cerro Gordo/Floyd County Line to near Charles City, this runs along the Avenue of Saints corridor. It is a multi-lane highway, with speeds near a posted 65 M.P.H. IA St Rt 27 does not pass through any towns in Floyd County. IA St Rt 27 is multi-plexed in Floyd County. U.S. Rt. 18, from the Cerro Gordo/Floyd County Line to near Charles City.
U.S. Rt. 218, from near Floyd to near Charles City.
IA St Rt 27 intersects the following highways in Floyd County. U.S. Rt. 218, near Floyd.
EB U.S. Rt. 18/SB IA St Rt 27 near Nora Springs. EB U.S. Rt. 18/SB IA St Rt 27 near Floyd. EB U.S. Rt. 18; SB U.S. Rt. 218/IA St Rt 27 north of Charles City. A guild markes on the ramp from EB U.S. Rt. 18; SB U.S. Rt. 218/IA St Rt 27. EB U.S. Rt. 18; SB U.S. Rt. 218/IA St Rt 27 near Charles City. SB U.S. Rt. 218/IA St Rt 27 south of Charles City.
