Sangamon County Highway 1 runs east-west in Norhtern Sangamon County. This runs from the Menard/Sangamon County Line to near Sherman. SCH 1 passes through the following town in Sangamon County. Andrew SCH 1 is not multi-plexed in Sangamon County. SCH 1 intersects the following highways in Sangamon County. Illinois State Route 29, near Andrew. Illinois State Route 124, near Sherman.