The one road that was forgotten, even by the Indiana State Highway Commission, on the Indiana Official State Highway Map of the Great Renumbering was SR 11.
The original planned SR 11, as published in the newspapers at the time, became marked SR 7. But there was a SR 11…near Richmond. And it had that number because it was a continuation of SR 11 in Ohio.
Both SR 11’s, in Indiana and Ohio, were part of the National Old Trails Road Auto Trail. This carried traffic from Richmond to Dayton, then Springfield, instead of the route of the National Road, which became US 40, from Richmond to Springfield.