Editing Interstate 390 (section)

{{Short description|Highway in New York}}
{{Use mdy dates|date=December 2022}}
{{Use American English|date=December 2022}}
{{Infobox road
| state = NY
| type = I
| route = 390
| map = {{maplink-road}}
| map_custom = yes
| map_notes = Map of [[Western New York]] with I-390 highlighted in red
| length_mi = 76.06
| length_ref = <ref>{{cite web |last=Starks |first=Edward |date=January 27, 2022 |title=Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table02.cfm |access-date=December 3, 2022 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]]}}</ref>
| established = {{circa|1973}}<ref name="1972map" /><ref name="1973map" />
| spur_type = I
| spur_of = 90
| direction_a = South
| terminus_a = {{jct|state=NY|I|86|NY|17}} in [[Avoca (town), New York|Avoca]]
| junction = {{plainlist|
*{{jct|state=NY|US|20A}} in [[Geneseo (town), New York|Geneseo]]
*{{jct|state=NY|US|20|NY|5}} in [[Avon (town), New York|Avon]]
*{{jct|state=NY|I-Toll|90|NYST||NY|253}} in [[Henrietta, New York|Henrietta]]
*{{jct|state=NY|I|590}} near [[Rochester, New York|Rochester]]
}}
| direction_b = North
| terminus_b = {{jct|state=NY|I|490|NY|390}} in [[Gates, New York|Gates]]
| counties = [[Steuben County, New York|Steuben]], [[Livingston County, New York|Livingston]], [[Monroe County, New York|Monroe]]
| previous_type = NY
| previous_route = 387
| next_type = NY
| next_route = 390
}}
'''Interstate&nbsp;390''' ('''I-390''') is a {{convert|76.06|mi|km|adj=on}} north–south [[auxiliary Interstate Highway]] located entirely within [[New York (state)|New York]] in the United States. The southern terminus of the route is at the [[Southern Tier Expressway]] ([[Interstate 86 in New York|I-86]] and [[New York State Route 17]], or NY&nbsp;17) in the town of [[Avoca (town), New York|Avoca]]. Its northern terminus is at [[Interstate 490 (New York)|I-490]] (Western Expressway) in [[Gates, New York|Gates]], just west of [[Rochester, New York|Rochester]]. North of I-490, the expressway continues as [[New York State Route 390|NY&nbsp;390]] to the [[Lake Ontario State Parkway]] in [[Greece (town), New York|Greece]]. I-390 connects to its parent, [[Interstate 90 in New York|I-90]] ([[New York State Thruway]]), in [[Henrietta, New York|Henrietta]], a southern suburb of Rochester. The route is known as the '''Genesee Expressway''' from Avoca to [[Interstate 590|I-590]] in [[Brighton, Monroe County, New York|Brighton]], where it becomes part of the [[Rochester Outer Loop]].

In addition to serving Rochester, I-390 serves as an important connecting route between the [[Rochester metropolitan area, New York|Rochester metropolitan area]] and [[Corning (city), New York|Corning]] and the rest of the [[Southern Tier]] of New York. The freeway also serves several smaller communities between Corning and Rochester, including the [[Livingston County, New York|Livingston County]] villages of [[Dansville, Livingston County, New York|Dansville]] and [[Geneseo (village), New York|Geneseo]]. I-390 effectively replaced [[U.S. Route 15 in New York|US Route&nbsp;15]] (US&nbsp;15) and parallels [[New York State Route 15|NY&nbsp;15]], US&nbsp;15's de facto successor, north of Corning. From [[Lakeville, New York|Lakeville]] north to [[Brighton, Monroe County, New York|Brighton]], the two routes cross paths four times and are located no more than {{convert|1.5|mi|km}} apart along the entire stretch.

The first section of the Genesee Expressway opened in the late 1960s, extending from [[Wayland (village), New York|Wayland]] in the east to Dansville in the west. The entirety of the then-proposed highway was designated as '''New York State Route&nbsp;401''' ('''NY&nbsp;401''') in 1970 but redesignated as I-390 {{circa|lk=no|1973}}. More sections of the freeway opened throughout the 1970s, and I-390 was extended northwestward to cover the southwestern quadrant of the Rochester Outer Loop in 1980 following the elimination of [[New York State Route 47|NY&nbsp;47]]. I-390 was completed in the early 1980s.