New York State Route 390

New York State Route 390 is a major north–south state highway in the Southern Tier and Finger Lakes regions of New York. It extends for approximately 88 miles from an interchange with Interstate 86 and U.S. Route 15 in Chemung County to a junction with New York State Route 104 in the city of Rochester. The route serves as a critical transportation corridor, connecting the Pennsylvania border area with the Greater Rochester metropolitan area and providing access to several major institutions, including the University of Rochester and the Rochester Institute of Technology.

Route description

Beginning at a complex interchange with I-86 and US 15 in the town of Southport, the route heads northward through the valley of the Chemung River. It passes through the city of Corning, where it intersects NY 17 and provides access to the renowned Corning Museum of Glass. Continuing north, it traverses the rural landscapes of Steuben County and Livingston County, running parallel to the Canisteo River for a portion of its journey. As it enters Monroe County, the highway becomes a limited-access expressway, passing through suburban communities like Brighton and Henrietta before terminating at an intersection with NY 104 in Rochester, just south of the Lake Ontario shoreline.

History

The corridor was originally designated as part of NY 15 in the 1930s, following existing roadways like NY 17 and NY 63. A major renumbering in the late 1960s assigned the NY 390 designation to the newly constructed Southern Tier Expressway segment and the existing route north of Corning. Significant construction projects throughout the 1970s and 1980s upgraded the northern sections in Monroe County to a controlled-access highway, facilitating traffic to growing suburbs and the Greater Rochester International Airport. The route's alignment was finalized with the completion of the interchange with the I-390 and NY 17 system in Steuben County, cementing its role in the New York State Department of Transportation's network.

Major intersections

From south to north, key junctions include the southern terminus at I-86/US 15 in Southport. In Corning, it meets NY 17 and NY 352. Further north, it intersects NY 21 near Dansville and NY 36 in Mount Morris. Within Monroe County, major interchanges occur with NY 253 in Brighton, NY 252 in Henrietta, and the I-490 beltway around Rochester. The northern terminus is a signalized intersection with NY 104 near the Genesee River.

Auxiliary routes

NY 390 has one signed auxiliary route, New York State Route 390A. This short connector, located in the town of Henrietta, links the main highway with Jefferson Road and provides direct access to the campus of the Rochester Institute of Technology and several major corporate parks. The New York State Department of Transportation also maintains several unsigned reference routes along the NY 390 corridor for internal inventory purposes, including connections to frontage roads and service areas.

Category:State highways in New York (state)