U.S. Route 6 (US 6) is a part of the United States Numbered Highway System that runs from California to Provincetown, Massachusetts. In Indiana, it is part of the Indiana state road system that enters the state concurrent with the Borman Expressway between Lansing, Illinois, and Munster, Indiana. The of US 6 that lie within Indiana serve as a major conduit. Some sections of the highway is listed on the National Highway System. Various sections are rural two-lane highway and urbanized four-lane divided highways. The easternmost community along the highway is Butler at the Ohio state line.
US 6 passes through farmfields and forestlands and along the northern part of Indiana. The highway is included in the Grand Army of the Republic Highway. US 6 was first designated as a U.S. Route in 1932. A section of the highway originally served as part of Sauk Indian Trail. US 6 replaced the original State Road 17 (SR 17) designation of the highway which dated back to the formation of the Indiana state road system. SR 17 ran from Ligonier through Kendallville to Waterloo and ended in Butler. US 6 also replaced the second designation of the highway, State Road 6 (SR 6), through most of the state.
Route description
US 6 enters Indiana concurrent with I-80/I-94 on the Borman Expressway, from Illinois. The concurrency passes through several communities in Lake County before US 6 leaves the Borman in Lake Station at the Ripley Street exit. US 6 heads south on Ripley Street, concurrent with SR 51, passing through Lake Station. The road enters Hobart, before turning east, leaving SR 51, before leaving Lake County and entering Porter County. In Porter County, US 6 continues east as a four-lane road passing through commercial properties. US 6 has an intersection with SR 149. East of this intersection, US 6 becomes a two-lane rural road passing through residential properties with some fields. The road becomes a four-lane divided highway passing south of the Porter Regional Hospital and through an interchange with SR 49. East of SR 49, the roadway reduces back to a two-lane road, before passing over CSX Transportation's Garrett Subdivision. East of the tracks, US 6 becomes a three-lane roadway, with two-lanes eastbound and one-lane westbound, before reducing back to a two-lane roadway. US 6 leaves Porter County and enters LaPorte County, before entering Westville. In Westville, US 6 has an intersection with SR 2 before US 6 turns south concurrent with US 421. The concurrency heads south for a short distance, passing east of the Westville Correctional Facility, before US 6 turns toward the east and US 421 continues toward the south. East of US 421, US 6 passes farms and fields. In rural LaPorte County, US 6 has an intersection with SR 39 before an at grade crossing with Canadian National Railway's South Bend Subdivision. Past the railroad tracks, US 6 becomes a four-lane divided road before an intersection with US 35. US 6 and US 35 head south-southeast, and the roadway narrows back to a two-lane highway. The road crosses over CSX Transportation's Garrett Subdivision before passing northeast of Kingsford Heights. Past Kingsofrd Heights, the road bends to become east–west. The concurrency between US 6 and US 35 ends, with US 35 turning south and US 6 continuing east. US 6 crosses over the Kankakee River before entering St. Joseph County. In St. Joseph County, the road enters Walkerton and passing through the southern end of SR 104, near industrial properties. US 6 bends to become southeast–northwest passing through downtown, while, in downtown, US 6 has a short overlap with SR 23. US 6 leaves Walkerton heading southeast, before leaving St. Joseph County and entering Marshall County.
In Marshall County, US 6 curves to become east–west, passing farmland, before the roadway becomes a four-lane divided roadway and enters La Paz. In La Paz, the road passes through commercial properties and an intersection with the Michigan Road, former US 31. Past La Paz, US 6 has an interchange with US 31 before narrowing back to a two-lane rural highway. The highway curves northeast, having an intersection with western end SR 106 and crossing over CSX Transportation's Garrett Subdivision again, before curving to become east–west near an Indiana State Police post. US 6 heads east, having an intersection with a connecting road at connects with SR 331, before bridging over SR 331. The road bends to the southeast, having an intersection with the eastern end of SR 106 before a few more curves, with the road generally traveling in an east-southeast direction. US 6 leaves Marshall County and enters Elkhart County before entering the town of Nappanee.