The route heads northwest as a two-lane rural highway, passing through farmland and woodland.

SR 129 heads east concurrent with US 50 and leaves town, entering Versailles State Park.

After passing through Versailles State Park, the concurrency endS when SR 129 turns north towards Batesville.

[2][3] The only segment of State Road 129 in Indiana that is included in the National Highway System (NHS), is that concurrent with US 50.

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

This measurement is a calculation of the traffic level along a segment of roadway for any average day of the year.