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| NY 3 | |
|---|---|
| State | New York |
| Type | State Highway |
| Length mi | 240.58 |
| Established | 1924 |
| Direction a | West |
| Terminus a | Hammond |
| Direction b | East |
| Terminus b | Plattsburgh |
| Counties | St. Lawrence County, Jefferson County, Lewis County, Oneida County, Herkimer County, Hamilton County, Franklin County, Clinton County |
NY 3
NY 3 is a long east–west State Highway crossing northern New York from near Hammond to Plattsburgh, linking rural communities, tourist destinations, and regional transportation corridors. The route traverses or intersects with major arteries including U.S. Route 11, Interstate 81, Interstate 90, U.S. Route 9, and connects to recreation hubs such as Thousand Islands, Adirondack Park, Lake Ontario, and Lake Champlain. The highway serves as a backbone for access to urban centers like Watertown, Saranac Lake, Tupper Lake, and Plattsburgh International Airport.
NY 3 begins near Hammond at an intersection with U.S. 11 and heads southeast through Le Ray and into Watertown, where it meets I-81 and U.S. 11 again near Thompson Park and Jefferson County. East of Watertown NY 3 parallels the Lake Ontario shoreline and passes through communities such as Carthage and Black River (village), intersecting NY 12F and NY 342 en route to the foothills of the Adirondack Mountains.
In Lewis County NY 3 advances toward Watertown International Airport access and the Lowville corridor, where it intersects NY 12 and NY 812. Continuing eastward into Oneida County, NY 3 crosses near Herkimer and Mohawk River crossings, connecting with I-90 via interchanges that provide access toward Syracuse and Albany.
After skirting Adirondack Park boundaries NY 3 becomes a scenic arterial through Tupper Lake and Saranac Lake, sharing alignments with NY 30 and NY 86 at points that provide links to Lake Placid and Whiteface Mountain. East of the central Adirondacks the route passes through Plattsburgh outskirts, providing connections to U.S. 9, I-87, and access to Lake Champlain ferry services near Moriah and recreational nodes.
NY 3 was assigned in the 1920s as part of New York's initial numbered highway system and has been realigned repeatedly to reflect changing transportation patterns influenced by projects such as the St. Lawrence Seaway planning, Federal-Aid Highway Act of 1956, and regional development initiatives by NYSDOT. Early routings connected Buffalo-area corridors eastward through Rochester and Syracuse before subsequent truncations and reassignments created the present northern alignment.
During the mid-20th century NY 3 absorbed and relinquished segments to routes including U.S. Route 11, NY 12, NY 26, and NY 37 as expressway construction such as I-81 and I-90 shifted through traffic. Historic bypasses and business route designations arose in Watertown, Carthage, and Saranac Lake to manage local access, reflecting patterns seen in Plattsburgh and Tupper Lake.
NYSDOT preservation efforts and local initiatives by municipalities such as Jefferson County and Clinton County have maintained NY 3 as a corridor supporting tourism to Thousand Islands, Adirondack Park, and Lake Champlain while upgrading bridges tied to programs like the NBIS.
NY 3 intersects numerous arterial routes and rail-served corridors including U.S. 11 near Hammond; I-81 and U.S. 11 in Watertown; NY 12F at Clayton approaches to Thousand Islands Bridge corridors; NY 342 near military access points such as Fort Drum; NY 12 in Lowville; I-90 interchanges providing access toward Syracuse; NY 30 and NY 86 in Tupper Lake and Saranac Lake; and U.S. 9 and I-87 approaches serving Plattsburgh and Lake Champlain ferry connections.
Traffic volumes on NY 3 vary from low-density rural sections in Lewis County to higher volumes around Watertown and Plattsburgh, influenced by seasonal tourism to Thousand Islands, Adirondack Park, Lake Placid, and Saranac Lake. Safety initiatives have targeted high-crash segments near river crossings such as the Black River and mountain passes near Tupper Lake with projects coordinated by New York State Police and NYSDOT. Freight movements linked to Port of Oswego-area logistics and military traffic to Fort Drum also affect pavement wear and bridge loading on selected segments.
Upcoming projects involve bridge rehabilitation funded through state and federal programs administered by NYSDOT, corridor resurfacing prioritized in regional transportation plans by Jefferson County and Clinton County, and potential safety upgrades near tourist gateways such as Saranac Lake and Tupper Lake. Discussions with stakeholders including Adirondack Council and regional planning agencies consider seasonal capacity, multimodal access to Plattsburgh International Airport, and interactions with I-87 and U.S. 9 corridors.
NY 3 has historically interacted with numerous numbered highways and designations including NY 3A, NY 3B, NY 12, NY 37, U.S. Route 11, U.S. Route 9, I-81, I-90, and I-87. Local business routes and former alignments exist in communities such as Watertown, Carthage, Saranac Lake, and Plattsburgh, and preservation of scenic byways links NY 3 to initiatives by Adirondack Park Agency and tourism promotion by entities like the Thousand Islands Regional Tourism Council.