I-390 is a freeway linking Rochester with the Southern Tier. The first section to open, between Wayland and Dansville, was originally part of NY 245. The expressway was considered to be part of NY 401 prior to being designated I-390 in 1973. While its route from I-590 to downtown Rochester was cancelled, it was re-routed onto the "Outer Loop" (formerly NY 47, which was to be entirely I-590) to I-490 (at one time, the I-390 designation was to reach NY 104, but this was denied by FHWA). It is extended by NY 390 to the Lake Ontario State Parkway.

Mile Northbound Southbound Notes
Steuben County
Speed Limit 65
0.0 I-390 north I-86 East
Corning
NY 17
0.3 I-86 West
Jamestown
NY 17
1.4 Exit 1
To NY 415
Avoca
8.6 Scenic Overlook
10.4 Exit 2
To NY 415
Cohocton
Naples
CR 121
16.1 Exit 3
NY 15 NY 21
Wayland
End of former multiplex with NY 15; many signs still remain
Begin former NY 245 overlap
Livingston County Steuben County
22.0 Exit 4
NY 36
Dansville
Hornell
23.7 Exit 5
NY 36
Dansville
End former NY 245 overlap
32.6 Exit 6
NY 36
Mount Morris
Letchworth State Park
Exit 6
NY 36
Sonyea
37.6 Geneseo Rest Area Mount Morris Rest Area
38.4 Exit 7
NY 63 NY 408
Geneseo
Exit 7
NY 63 NY 408
Mount Morris
Letchworth State Park
47.6 Exit 8
US 20A
Lakeville
Conesus Lake
Exit 8
US 20A
Geneseo
51.1 Exit 9
NY 15
Avon
Exit 9
NY 15
Lakeville
Conesus Lake
54.2 Exit 10
US 20 NY 5
Avon
Lima
Monroe County Livingston County
61.4 Exit 11
NY 15 NY 251
Rush
Scottsville
64.9 Exit 12
I-90 NY 253
Thruway
Lehigh Station Road
Exit 12B
I-90
Thruway
65.4 Exit 12A
NY 253
Lehigh Station Road
66.9 Exit 13
Hylan Drive
Mall
68.0 Exit 14
NY 15A NY 252
East Henrietta Road
Jefferson Road
Exits 14A-B
NY 15A NY 252
East Henrietta Road
Jefferson Road
Speed Limit 55 Speed Limit 65
68.8 Exit 15B
Brighton-Henrietta Town Line Road
69.9 Exit 15
I-590 North
Downtown Rochester
Irondequoit
Exit 15A
I-590 North
Irondequoit
End of Genesee Expressway
70.7 Exit 16B
NY 15A North
East Henrietta Road
Rochester
70.7 Exit 16A
NY 15A South NY 15
East Henrietta Road
West Henrietta Road
Exit 16B
NY 15A
East Henrietta Road
Formerly exit 16 northbound
University of Rochester
Medical Center
Monroe Community College
71.2 Exit 16A
NY 15
West Henrietta Road
East River Road
72.6 Exit 17
NY 383
Scottsville Road
Former NY 47
73.5 Exit 18A
Brooks Avenue East
73.5 Exit 18B
NY 204 West
Brooks Avenue
Airport
74.2 Exit 19
NY 33A
Chili Avenue
75.5 Exit 20A
I-490 East
Downtown Rochester
75.7 Exit 20B
I-490 West
Buffalo
NY 390 north I-390 south
76.1 Exit 21
NY 31
Lyell Avenue
77.1 Exit 22
Lexington Avenue
78.0 Exit 23
Ridgeway Avenue
79.1 Exit 24A
NY 104 East
Ridge Road
79.1 Exit 24B
NY 104 West
Ridge Road
Greece
Exit 24
NY 104
Ridge Road
Greece
Former end of NY 47
80.8 Exit 25
Vintage Lane
82.4 Exit 26
NY 18
Latta Road
Commercial vehicles must exit
Exit 26
NY 18
Latta Road
83.5 Exit 27A
Lake Ontario State Parkway East
Rochester
83.5 Exit 27B
Lake Ontario State Parkway West
Hamlin Beach
NY 390 south
Speed Limit 55
Monroe County

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