Editing Interstate 390 (section)

==Route description==

In its southern sections, which account for most of the highway's mileage, I-390 is a lightly trafficked freeway of two lanes in either direction going through minimally populated rural areas. Closer to Rochester, it becomes wider to accommodate the increased traffic it handles in the city itself.

===Steuben and Livingston counties===
I-390 begins as westbound traffic on the concurrent routes of [[Interstate 86 (east)|I-86]] and [[New York State Route&nbsp;17|NY&nbsp;17]] proceeds below the overpass carrying those two routes to the west, at an interchange just east of the village of [[Avoca (village), New York|Avoca]] in [[Steuben County, New York|Steuben County]]. The expressway heads northwest through the narrow valley of the [[Cohocton River]] to [[Cohocton (village), New York|Cohocton]], where the river leaves the expressway and heads north toward the [[hamlet (New York)|hamlet]] of Atlanta. I-390 climbs gradually as it continues past Cohocton, eventually turning due west as it descends to an interchange with [[New York State Route 21|NY&nbsp;21]] south of [[Wayland (village), New York|Wayland]].<ref name="bing">{{bing maps |url=http://binged.it/1N8ltRr |title=overview map of I-390 |access-date=August 14, 2015}}</ref> This exit is also the southern terminus of [[New York State Route 15|NY&nbsp;15]], which eventually parallels the Interstate further north.<ref name="2008tvr" />

[[File:I-390 near Cohocton, NY.jpg|thumb|left|I-390 near Cohocton|alt=A divided expressway curving through a rural landscape alongside a valley, climbing slightly in the background.]]
The road climbs again as it makes a gentle bend and widens as it crosses the [[Livingston County, New York|Livingston County]] line just south of [[Dansville, Livingston County, New York|Dansville]] and north of [[Stony Brook State Park]]. Descending again, it returns to its northwestern heading. North of the village, it climbs to the west side of the wide valley of [[Canaseraga Creek]], giving the roadway a view over the area known locally as the Flats. [[New York State Route 36|NY&nbsp;36]] begins to parallel the highway closely, with [[New York State Route 63|NY&nbsp;63]] on the far side of the Flats. Just south of the hamlet of [[Sonyea, New York|Sonyea]], NY&nbsp;36 crosses at a diamond interchange. I-390 turns northeast briefly but resumes its northwest course soon afterward. At this point, the highway follows more level ground, with woods and swamps mostly replacing farmland in the surrounding landscape.<ref name="bing" />

[[File:I-390 near Sonyea, NY.jpg|thumb|right|I-390 northbound from exit&nbsp;6 near Sonyea|alt=A divided expressway curves from the right of the image through a mostly wooded landscape towards a ridgeline at the rear below a blue sky filled with little white fluffy clouds. Along the roadway closest to the camera is a large white truck with "Perry's Ice Cream" along the side and pictures of scoops of ice cream in various colors and flavors]]
After passing rest areas on either side, I-390 reaches the [[New York State Route 408|NY&nbsp;408]] exit adjacent to the [[American Rock Salt]] mine at [[Hampton Corners, New York|Hampton Corners]]. Here, most traffic bound for the [[Buffalo, New York|Buffalo]] area exits to go west to [[Mount Morris (village), New York|Mount Morris]], visible across the Flats from the freeway, where it follows NY&nbsp;36 north. To the immediate east of the exit, NY&nbsp;408 ends at NY&nbsp;63, which carries traffic from the Interstate into [[Geneseo (village), New York|Geneseo]], the [[county seat]]. {{One2a|{{convert|1|mi|km|spell=In}}}} north of the exit, Canaseraga Creek drains into the [[Genesee River]] on the road's west side.<ref name="bing" />

The expressway continues north through Livingston County to [[Geneseo (village), New York|Geneseo]], which I-390 skirts to the south and east. While there is no exit for Geneseo on the part of the freeway that encroaches the village, exit&nbsp;8, an interchange with [[U.S. Route 20A (New York)|US&nbsp;20 Alternate]] (US&nbsp;20A) east of Geneseo, provides the connection. Also accessible from the junction is the hamlet of [[Lakeville, New York|Lakeville]], situated off to the east at the junction of US&nbsp;20A and NY&nbsp;15. I-390 continues on, encountering NY&nbsp;15 north of Lakeville and southeast of [[Avon (village), New York|Avon]]. From here north to [[Rochester, New York|Rochester]], I-390 and NY&nbsp;15 follow closely parallel alignments. Both highways meet [[U.S. Route 20 in New York|US&nbsp;20]] and [[New York State Route 5|NY&nbsp;5]] east of Avon prior to crossing into [[Monroe County, New York|Monroe County]].<ref name="bing" />

===Monroe County===
As I-390 heads north through the southern extents of the county, the surroundings become more residential and commercial in nature. The freeway meets NY&nbsp;15 and [[New York State Route 251|NY&nbsp;251]] in [[Rush, New York|Rush]] ahead of an interchange with both the [[New York State Thruway]] ([[Interstate 90 in New York|I-90]]) and [[New York State Route 253|NY&nbsp;253]] in southern [[Henrietta, New York|Henrietta]]. Past the thruway, the transition from the rural landscapes of the Southern Tier and [[Finger Lakes]] to residential and commercial areas is completed as I-390 continues into the suburbs of Rochester and the commercial center of Henrietta. Roughly {{convert|1.5|mi|km}} from NY&nbsp;253, I-390 has an exit leading to Hylan Drive, a through street leading to [[The Marketplace Mall]]. Farther north, I-390 meets both [[New York State Route 15A|NY&nbsp;15A]] and [[New York State Route 252|NY&nbsp;252]] in equally commercialized areas before entering [[Brighton, Monroe County, New York|Brighton]].<ref name="bing" />

[[File:Downtown Rochester NY from I-390 in Henrietta.jpg|thumb|left|Northbound on I-390 in southern Henrietta. The skyline of [[Downtown Rochester]] is visible in the background.]]
Shortly after entering Brighton, I-390 crosses over the [[Erie Canal]] and meets the southern terminus of [[Interstate 590|I-590]] at a large [[semi-directional T interchange]] located adjacent to the canal and South Clinton Avenue. The latter of the two passes through the eastern half of the junction, crossing over I-590 but passing under the ramps connecting I-590 south to I-390 south and I-390 north to I-590 north. Past the exit, I-390 turns to the west, joining the [[Rochester Outer Loop]] and crossing back over the canal ahead of an interchange with NY&nbsp;15 and NY&nbsp;15A. After passing under NY&nbsp;15, the freeway begins to run along the southern edge of the Erie Canal, here delimiting the southern city limits of Rochester. The canal and I-390 run side by side for just over {{convert|1|mi|km|spell=in}} to the Genesee River, where I-390 veers slightly to the west as it meets [[New York State Route 383|NY&nbsp;383]] at a [[partial cloverleaf interchange]].<ref name="bing" />

[[File:390sb airport.jpg|thumb|right|I-390 southbound by the Greater Rochester International Airport, with heavy traffic on the northbound side]]
For the next mile ({{Convert|1|mi|km|disp=output only}}), I-390 follows a more northwesterly alignment along the northeastern edge of the [[Greater Rochester International Airport]] grounds. It meets Brooks Avenue ([[New York State Route 204|NY&nbsp;204]]) at the northern edge of the grounds before leaving the airport area and curving more to the north, matching changes in the Erie Canal's alignment as both entities proceed around the southwestern edge of the city. Now in [[Gates, New York|Gates]], I-390 crosses over the [[Rochester and Southern Railroad]] just south of another partial cloverleaf interchange with [[New York State Route 33A|NY&nbsp;33A]]. The freeway continues on, passing under the [[CSX Transportation]]-owned [[Rochester Subdivision]] and [[New York State Route 33|NY&nbsp;33]] before connecting to [[Interstate 490 (New York)|I-490]] at a complex interchange roughly {{convert|0.25|mi|km}} west of the canal and the Rochester city limits. I-390 ends here; however, the freeway continues northward toward [[Greece (town), New York|Greece]] as [[New York State Route 390|NY&nbsp;390]].<ref name="bing" />