New York State Route 303
State highway in Rockland County, New York, US
New York State Route 303 (NY 303) is a north–south state highway in eastern Rockland County, New York, in the United States. It begins at the New Jersey state line in the hamlet of Tappan and runs generally northward for 10.92 miles (17.57 km) to an intersection with U.S. Route 9W (US 9W) in Clarkstown. The route has connections to the Palisades Interstate Parkway and the New York State Thruway, the latter carrying Interstate 87 (I-87) and I-287. NY 303 was assigned as part of the 1930 renumbering of state highways in New York, and only minor realignments have occurred since that time.
Route description
NY 303 begins at the New Jersey–New York border in Tappan, a hamlet in the town of Orangetown. Directly south of the border is Bergen County, New Jersey, in which the road continues as County Route 505 (CR 505). NY 303 begins as a four-lane route with mostly full access, and it retains this status until Valley Cottage. As it progresses northward, it intersects the Palisades Interstate Parkway (PIP) at exit 5 in Tappan. The interchange is the southernmost New York exit along the PIP. Right after the PIP junction, NY 303 enters Orangeburg, where it intersects the signed northern terminus of NY 340. NY 303 also intersects CR 20 at this location.
Begin with the source’s own compact description: “New York State Route 303” is state highway in Rockland 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 Rockland 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 Jul 27, 2026. The linked authority identifier is Q2486622. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1930.
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 303”, its source revision and the description used here.
- Expand the search: follow New York State Route 303 primary sources, New York State Route 303 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 303”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “New York State Route 303” 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.