[2] The western end of the Lincoln Highway in Indiana was at the Illinois state line.

Leaving US 30 and heading east, running one mile north of US 30, through Merrillville.

East of Merrillville Lincoln Highway rejoins US 30, before leaving US 30 west of Valparaiso.

The first route went farther north passing through South Bend, Elkhart, and Goshen.

The second route was the most direct route from Valparaiso to Fort Wayne, passing through Plymouth, Warsaw, and Columbia City.