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
Waterloo
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.
SB U.S. Rt. 218/IA St Rt 27 north of Cedar Falls. A BGS on SB U.S. Rt. 218/IA St Rt 27. SB U.S. Rt. 218/IA St Rt 27 at IA St Rt 57/58. SB IA St Rt 27/58 near Rainbow Drive. SB IA St Rt 27/58 in Cedar Falls. SB IA St Rt 27/58 near U.S. Rt. 20. A junction marker on SB IA St Rt 27/58. EB U.S. Rt. 20/SB IA St Rt 27 in Waterloo. EB U.S. Rt. 20/SB IA St Rt 27 near I-380/U.S. Rt. 218. EB U.S. Rt. 20/SB IA St Rt 27 at the ramp for SB U.S. Rt. 218. EB U.S. Rt. 20/SB IA St Rt 27 at the fly over ramp for SB I-380. A BGS on SB I-380; EB U.S. Rt. 20; SB IA St Rt 27. SB I-380; EB U.S. Rt. 20; SB IA St Rt 27 at EB U.S. Rt. 20. SB I-380/IA St Rt 27 near Gilbertville.