U.S. Federal Route 6 runs breifly through the southeastern portion of Cedar County. U.S. Rt. 6 does not pass through any towns in Cedar County. U.S. Rt. 6 is multi-plexed in Cedar County. Interstate 80, from the Scott/Cedar County Line to IA St Rt 38.
WB I-80/U.S. Rt. 6 at the Scott/Cedar County Line. WB I-80/U.S. Rt. 6 west of M.P. 277. WB I-80/U.S. Rt. 6 near Durant. EB I-80/U.S. Rt. 6 east of M.P. 271. WB I-80/U.S. Rt. 6 east of M.P. 271. WB I-80/U.S. Rt. 6 at M.P. 271. A BGS on EB I-80/SB IA St Rt 38. A BGS on EB I-80/SB IA St Rt 38. A BGS on WB I-80/U.S. Rt. 6. A BGS on WB I-80/U.S. Rt. 6.