U.S. Federal Route 51 runs north-south across Mc Lean County. This is one of the counties that U.S. Rt. 51 has a spur in. Around Bloomington and north of Normal, U.S. Rt. 51 is on interstate standard highway. South of Bloomington, the route is slowly being upgraded to interstate standards in hopes that Interstate 39 will be extended southward. U.S. Rt. 51 passes through the following towns in Mc Lean County. Normal
Bloomington
U.S. Rt. 51 is multi-plexed several times in Mc Lean County Interstate 39, from the Woodford/Mc Lean County Line to Interstate 55 at Normal.
Interstate 55, from Interstate 39 in Normal to Veterans Parkway in Bloomington.
Interstate 74, from Normal to Busn. U.S. Rt. 51 in Bloomington.
Branches of U.S. Rt. 51 NB U.S. Rt. 51 south of Heyworth. A guide sign on EB U.S. Rt. 136. NB U.S. Rt. 51 at Heyworth. SB U.S. Rt. 51 near Heyworth. NB U.S. Rt. 51 just south of Bloomington. NB U.S. Rt. 51 at the southside of Bloomington. A BGS on WB I-74. Another BGS on WB I-74. NB U.S. Rt. 51 at I-74, on the southside of Bloomington. WB I-74/N.B. U.S. Rt. 51 on the southside of Bloomington, near the U.S. Rt. 51/BUSN. U.S. Rt. 51 interchange. A BGS on NB I-55. NB I-55/WB I-74/NB U.S. Rt. 51 on the westside of Bloomington. NB I-55/U.S. Rt. 51; WB I-74 at U.S. Rt. 150/IL St Rt 9. A BGS on WB U.S. Rt. 150/IL St Rt 9. A BGS on EB U.S. Rt. 150/IL St Rt 9. NB I-55/U.S. Rt. 51; WB I-74 north of U.S. Rt. 150/IL St Rt 9. A overhead sign on NB I-55/WB I-74/NB U.S. Rt. 51. Another over head BGS on NB I-55/WB I-74/NB U.S. Rt. 51. A guide sign on SB I-55/EB I-74/SB U.S. Rt. 51 in Normal. NB I-55/U.S. Rt. 51 at I-74 in Normal. A BGS on EB I-74. A BGS on EB I-74. This replaced the one in the picture above. (December, 2004) A overhead sign on NB I-55/U.S. Rt. 51. NB I-55 at I-39/U.S. Rt. 51. Directional signs at the interchange of I-39/U.S. Rt. 51 and BUSN. U.S. Rt. 51 north of Normal. A guide sign on BUSN U.S. Rt. 51 at the junction of I-39/U.S. Rt. 51. Looking north at I-39/U.S. Rt. 51 at BUSN. U.S. Rt. 51 north of Normal. A BGS on SB IL St Rt 251. NB I-39/U.S. Rt. 51 at the Mc Lean/Woodford County Line.