| State: | IN |
| Type: | Lincoln |
| Map: | LH-Map-75.jpg |
| Established: | 1913 |
| Direction A: | East |
| Terminus A: | Lincoln Highway at Illinois state line |
| Direction B: | West |
| Terminus B: | Lincoln Highway at Ohio state line |
| System1: | Historic trails and roads in the United States |
Lincoln Highway had two different routes through Indiana, the original route went through South Bend and Elkhart.[1] The Lincoln Highway's northern alignment is now called Lincoln Way and is a byway.[2]
The western end of the Lincoln Highway in Indiana was at the Illinois state line. The Lincoln Highway headed east passing through Dyer, still heading east the Lincoln Highway headed north around Schererville. 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.
There were two routes from Valparaiso to Fort Wayne. 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.