Milestones were placed along much of the National Road; many original milestones (and some replicas) still stand in Maryland, Pennsylvania, West Virginia and Ohio. But for some reason, only two milestones still stand in Indiana. The first is one mile east of Centerville, four and a half miles west of Richmond, and nine miles west of the Ohio state line.
The other is three miles west of Centerville, six miles west of Cambridge City, and 13 miles west of the state line.
These two milestones are on private property, which may be why they still stand. I wonder whether there were other Indiana National Road milestones and, of so, what became of them.
If you like the National Road, you might like reading everything else I’ve written about it.