SR 231 has its southern terminus at a CSX railroad crossing in the village of Morral.

There are no segments of SR 231 that are included within the National Highway System (NHS).

The NHS is a network of highways identified as being most important for the economy, mobility and defense of the nation.

The highway was originally a short connector route in the Nevada vicinity, running between the former SR 182, now County Road 182, CR 182, in Nevada and the old two-lane alignment of U.S. Route 30 (US 30), now designated as CR 330, north of the village.

[7][8] Five years after being extended on the south ended, SR 231 was lengthened on the north end, following its present alignment along a previously county-maintained roadway to a new northern terminus at its present eastern junction with SR 103 east of Sycamore.