New York State Route 390
State highway in Monroe County, New York, US
New York State Route 390 (NY 390) is a north–south freeway located along the western edge of the city of Rochester, New York, in the United States. The route, a northward continuation of Interstate 390 (I-390), extends for 8.00 miles (12.87 km) from I-490 in Gates to the Lake Ontario State Parkway in Greece, less than 1 mile (1.6 km) from the Lake Ontario shoreline. Between I-490 and NY 104, NY 390 makes up the north–south segment of the northwest quadrant of the Rochester Outer Loop, a series of freeways encircling Rochester. At NY 104, the Outer Loop departs NY 390 and follows NY 104 east into the city.
The freeway was constructed in stages from the 1960s to the 1980s, with the first segment—between I-490 and NY 31—opening to traffic c. 1963. At the time, it was part of NY 47, which followed the completed portions of the Outer Loop from Gates to Irondequoit. An extension of the freeway north to U.S. Route 104 (US 104; now NY 104) was opened to traffic in the early 1970s. NY 47 was eliminated in 1980, giving way to NY 390 from I-490 to NY 104. NY 390 was extended to its current length in the early 1980s.
Route description
NY 390 begins at the point where I-390 northbound crosses over I-490 eastbound in the center of a complex interchange between the two in Gates.
Begin with the source’s own compact description: “New York State Route 390” is state highway in Monroe County, New York, US. The dossier treats that line as a proposition to test through York, State and Route, not as a finished interpretation.
Why this record matters
The phrase “state highway in Monroe County, New York, US” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jan 18, 2025. The linked authority identifier is Q2486783. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1963 and 1980.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “New York State Route 390”, its source revision and the description used here.
- Expand the search: follow New York State Route 390 primary sources, New York State Route 390 archive and York research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “New York State Route 390”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “New York State Route 390” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.