U.S. Federal Route 20 is a east-west highway across Central Black Hwak County. This is a multi-lane divied expresway through the county. It serves as a main east-west corridor in Greater-Waterloo. U.S. Rt. 20 passes through the following towns in Black Hawk County. Cedar Falls
A junction marker on SB IA St Rt 27/58. A BGS on SB IA St Rt 27/58. A BGS on SB IA St Rt 27/58. WB U.S. Rt. 20/IA St Rt 27 at IA St Rt 58. EB U.S. Rt. 20/SB IA St Rt 27 in Waterloo. A street-sign on a stop light mast in Waterloo on U.S. Rt. 63. WB U.S. Rt. 20/NB IA St Rt 27 at U.S. Rt. 63. WB U.S. Rt. 20/NB IA St Rt 27 west of IA St Rt 21. WB U.S. Rt. 20/NB IA St Rt 27 west of I-380/U.S. Rt. 218. EB U.S. Rt. 20/SB IA St Rt 27 near I-380/U.S. Rt. 218. A BGS on SB I-380/U.S. Rt. 218. A BGS on SB I-380/U.S. Rt. 218. A BGS on SB I-380. A BGS on NB I-380/IA St Rt 27; WB U.S. Rt. 20. NB I-380/IA St Rt 27; WB U.S. Rt. 20 at Cedar River. NB I-380/IA St Rt 27; WB U.S. Rt. 20 west of River Forrest Road. NB I-380/IA St Rt 27; WB U.S. Rt. 20 east of River Forrest Road. NB I-380/IA St Rt 27; WB U.S. Rt. 20 at Evansdale Drive. NB I-380/IA St Rt 27; WB U.S. Rt. 20 at Raymond Road. EB U.S. Rt. 20/SB IA St Rt 27 at I-380/IA St Rt 27. EB U.S. Rt. 20/SB IA St Rt 27 at I-380/IA St Rt 27. The fly-over ramp is SB I-380. SB I-380; EB U.S. Rt. 20; SB IA St Rt 27 near Raymond. WB U.S. Rt. 20 at south I-380/IA St Rt 27. WB U.S. Rt. 20 at BHCH V51. WB U.S. Rt. 20 east of BHCH V51. WB U.S. Rt. 20 west fo BCH V65. WB U.S. Rt. 20 at the Buchanan/Black Hawk County Line.
