Editing Interstate 90 (section)

==Auxiliary routes==
:''Source: FHWA''<ref name="FHWA-Auxiliary">{{cite web |date=January 26, 2022 |title=Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of December 31, 2021 |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table02.cfm |work=Route Log and Finder List |publisher=Federal Highway Administration |accessdate=February 10, 2022 |archive-date=July 3, 2017 |archive-url=https://web.archive.org/web/20170703182115/https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table02.cfm |url-status=live }}</ref>

* [[Rapid City, South Dakota]]: [[Interstate 190 (South Dakota)|I-190]]
* [[Chicago|Chicago, Illinois]]: [[Interstate 190 (Illinois)|I-190]], [[Interstate 290 (Illinois)|I-290]]
* [[Cleveland|Cleveland, Ohio]]: [[Interstate 490 (Ohio)|I-490]]
* [[Buffalo, New York]]: [[Interstate 190 (New York)|I-190]], [[Interstate 290 (New York)|I-290]], [[Interstate 990|I-990]] (not directly connected)
* [[Rochester, Monroe County, New York|Rochester, New York]]: [[Interstate 390|I-390]], [[Interstate 490 (New York)|I-490]], [[Interstate 590|I-590]] (not directly connected)
* [[Syracuse, New York]]: [[Interstate 690|I-690]]
* [[Utica, New York]]: [[Interstate 790|I-790]]
* [[Schenectady, New York]]: [[Interstate 890|I-890]]
* [[Worcester, Massachusetts]]: [[Interstate 190 (Massachusetts)|I-190]] (not directly connected), [[Interstate 290 (Massachusetts)|I-290]]

I-90 in New York is the only Interstate Highway to have a complete set of auxiliary routes, all nine possible three-digit route numbers, within a single state.<ref name="FHWA-Facts"/> Eight of the thirteen states that the highway passes through do not have auxiliary routes of I-90.<ref name="FHWA-Facts"/>