Editing Interstate 90 (section)

===Indiana===
{{Main|Indiana Toll Road}}
[[File:Aetna i90.jpg|right|thumb|A section of the [[Indiana Toll Road]] (carrying I-90) in Gary, Indiana|alt=An overhead view of a divided highway with six lanes and a raised median barrier traveling through a rural area]]

The entirety of I-90 within Indiana is concurrent with the [[Indiana Toll Road]], which crosses the state's northern fringe and is mostly shared with [[Interstate 80|I-80]].<ref name="IN-Map">{{cite map |year=2021 |title=Indiana Roadway Map 2021 |url=https://www.in.gov/indot/files/2021_Roadway_Map-NEW-SIZEuseHQextendededit.pdf |publisher=[[Indiana Department of Transportation]] |scale=Scale not given |location=Indianapolis |accessdate=November 30, 2021 |archive-date=November 2, 2021 |archive-url=https://web.archive.org/web/20211102152650/https://www.in.gov/indot/files/2021_Roadway_Map-NEW-SIZEuseHQextendededit.pdf |url-status=live }}</ref> From the Illinois state line, the tollway travels south through [[Hammond, Indiana|Hammond]] and turns east to follow the [[Grand Calumet River]] through northern [[Gary, Indiana|Gary]], where it intersects [[U.S. Route 41|US&nbsp;41]] and US&nbsp;12. I-90 then crosses [[Interstate 65|I-65]] in eastern Gary and I-94 in [[Lake Station, Indiana|Lake Station]], where it begins a concurrency with I-80.<ref name="IN-Map"/>

I-94 travels northeast near the [[Lake Michigan]] shoreline from Lake Station to [[Michigan City, Indiana|Michigan City]], while the Indiana Toll Road (I-80/I-90) follows it to the south. The tollway then moves closer to the [[Michigan]]–Indiana state line and turns east, passing through the northern outskirts of [[South Bend, Indiana|South Bend]] and [[Elkhart, Indiana|Elkhart]]. In South Bend, it intersects [[U.S. Route 31|US&nbsp;31]] and passes near the [[University of Notre Dame]]. I-80/I-90 travels parallel to the state line until it reaches an interchange with [[Interstate 69|I-69]] near [[Fremont, Indiana|Fremont]], where it turns southeast. The tollway then turns east and crosses the Ohio state line near [[Angola, Indiana|Angola]].<ref name="IN-Map"/>