Illinois State Route 123 cuts east-west across Central Menard County. This links IL St Rt 29 to IL St Rt 97. Plus, it provides easy access to the Lincoln-New Salem Sites near Petersburg. In October, 2003 this highway was extened south along IL St Rt 29 back into Sangamon County. IL St Rt 123 passes through the following towns in Menard County. Petersburg
NB IL St Rt 29/WB IL St Rt 123 north of Athens. A guide sign on SB IL St Rt 123, near IL St Rt 29. WB IL St Rt 123 near Tice. SB IL St Rt 123 approching Petersburg. The Sangamon River is in foreground. SB IL St Rt 97/WB IL St Rt 123 south of Petersburg. WB IL St Rt 123 near Tullula. WB IL St Rt 123 near Sangamon/Menard County Line. A mile marker on IL St Rt 123 at the Menard/Sangamon County Line. The former end marker at IL St Rt 29.
