Iowa State Route 27 is one of the main highways through the Greater-Waterloo area. This runs along the cities west and south sides. It generally cuts in a angle through Black Hawk County. IA St Rt 27 passes through the following towns in Black Hawk County. Cedar Falls
IA St Rt 27 is multi-plexed in Black Hawk County. U.S. Rt. 218, from the Bremer/Black Hawk County Line to Cedar Falls.