Editing Interstate 87 (New York) (section)

===Adirondack Northway===
Off the Thruway, I-87 and I-90 overlap for a half mile ({{Convert|0.5|mi|km|disp=output only}}) along I-90's toll-free path through the Albany area. The brief concurrency ends at exit&nbsp;1 of the Adirondack Northway in [[Guilderland, New York|Guilderland]], a junction also numbered as exit&nbsp;1 on I-90. The Adirondack Northway and I-87 are still separate routes that share the same path; the Northway itself actually begins not at I-87/I-90 but about {{convert|1|mi|km|spell=in}} south from its interchange, the Northway reaches its southern terminus at Western Ave ([[U.S. Route 20 in New York|US&nbsp;20]]), and then joins with I-87 for the rest of its route. I-87 turns to head north toward the Canada–United States border at [[Champlain, New York|Champlain]] while I-90 continues east toward downtown Albany and [[Rensselaer County, New York|Rensselaer County]].<ref name="google" /> South of this point, the Northway feeds into a {{convert|0.86|mi|km|adj=on}} expressway spur known locally as [[Streets of Albany, New York#Northway/Fuller Road Alternate|Fuller Road Alternate]],<ref name="2011tvr">{{cite web |url = https://www.dot.ny.gov/divisions/engineering/technical-services/hds-respository/Traffic%20Volume%20Report%202011.pdf |access-date = December 26, 2012 |title = 2011 Traffic Volume Report for New York State |date = September 25, 2012 |pages = 142–145, 207, 242, 244–245, 261, 263 |publisher = [[New York State Department of Transportation]] }}</ref> which links I-87 and I-90 to US&nbsp;20.<ref name="google" /> Fuller Road Alternate is designated as '''New York State Route 910F''' ('''NY&nbsp;910F'''), an unsigned [[List of reference routes in New York|reference route]], by [[New York State Department of Transportation|NYSDOT]].<ref name="2011tvr" /> In 2004, NYSDOT ceremonially designated the entire {{convert|176|mi|km|adj=on}} Northway as the Adirondack Veterans Memorial Highway.<ref>{{cite news |title = Northway renamed for veterans |newspaper = [[The Daily Gazette]] |date = November 6, 2004 |location = Schenectady, NY |page = B6 }}</ref>

The Northway, the part of Interstate 87 (I-87) north of the New York State Thruway, was built in segments, which became I-87 as they were completed and linked to the pre-existing route. Construction began in the late 1950s on the portion of the Northway between the Thruway and [[New York State Route 7|NY&nbsp;7]] near [[Latham, New York|Latham]], and it was completed in 1960.<ref>{{cite map |title=New York with Special Maps of Putnam–Rockland–Westchester Counties and Finger Lakes Region |publisher=[[Esso]] |cartography=[[General Drafting]] |edition=1955–56 |year=1954}}</ref> 

====Albany and Saratoga counties====
I-87 heads northeast from I-90 as a six-lane freeway with three lanes in each direction. It immediately traverses the [[Albany Pine Bush]] Preserve and passes west of [[Rensselaer Lake]] before crossing [[CSX Transportation]]'s [[Hudson Subdivision]] and running parallel to Wolf Road, a business thoroughfare through the town of [[Colonie, New York|Colonie]]. Wolf Road itself begins adjacent to exit&nbsp;2, a [[cloverleaf interchange]] with [[New York State Route 5|NY&nbsp;5]] (Central Avenue). Heading northbound, the ramp for exit&nbsp;2E feeds directly into the intersection of NY&nbsp;5 and Wolf Road, located just west of [[Colonie Center]], one of the [[Capital District (New York)|Capital District]]'s largest enclosed shopping malls. I-87 continues to run alongside Wolf Road to exit&nbsp;4, a modified [[diamond interchange]] serving [[County Route 151 (Albany County, New York)|County Route&nbsp;151]] (CR&nbsp;151, named Albany Shaker Road) and [[Albany International Airport]]. Wolf Road ends south of the exit; however, another section begins north of the junction, carrying [[New York State Route 155|NY&nbsp;155]] away from the airport. Prior to the Northway, there was no break in Wolf Road; in essence, exit&nbsp;4 was built on top of Wolf Road's intersection with Albany Shaker Road. I-87 and NY&nbsp;155 meet at exit&nbsp;5, with the latter routed along Watervliet Shaker Road.<ref name="google" />

[[File:Thaddeus Kosciusko Bridge Albany Summer.jpg|thumb|left|The [[Thaddeus Kosciusko Bridge]] carries I-87 (the Northway) over the [[Mohawk River]] north of [[Albany, New York|Albany]].]]
After a brief stretch of housing tracts, I-87 connects to [[New York State Route 2|NY 2]] and [[New York State Route 7|NY&nbsp;7]] at exit&nbsp;6, a [[single-point urban interchange]], in a commercialized part of [[Latham, New York|Latham]]. NY&nbsp;7 joins I-87 here, following the freeway for roughly {{convert|0.8|mi|km}} to exit&nbsp;7, the west end of a limited-access highway previously known locally as Alternate Route&nbsp;7. While NY&nbsp;7 heads east toward [[Troy, New York|Troy]], I-87 continues north past gradually less commercialized areas as it approaches the northern county line. The businesses ultimately give way to stretches of homes and subdivisions as the highway crosses into [[Saratoga County, New York|Saratoga County]] by way of the [[Thaddeus Kosciusko Bridge]], called by locals "the [[twin bridges]]", spanning the [[Mohawk River]].<ref name="google" /> The northern portion of the Northway through Colonie and Saratoga County is now a heavily traveled commuter route as a six-lane freeway. Since the highway's construction, Saratoga County has become the fastest growing area of the Capital District, and indeed all of upstate New York.<ref>{{cite news |title = Growing predicament |last = Aaron |first = Kenneth |date = October 3, 2004 |newspaper = [[Times Union (Albany)|Times Union]] |location = Albany, NY }}</ref>

For its first few miles in Saratoga County, I-87 runs across lightly developed parts of the towns of [[Halfmoon, New York|Halfmoon]] and [[Clifton Park, New York|Clifton Park]]. Near exit&nbsp;9, however, the freeway passes through the commercial center of Clifton Park as it connects to [[New York State Route 146|NY&nbsp;146]]. [[Clifton Park Center]], one of several shopping plazas at the junction, is situated southwest of the exit. Past exit&nbsp;9, the commercial development subsides as I-87 traverses another area dominated by housing tracts. Just north of the exit, the freeway passes a rest area for northbound traffic. The freeway continues on, passing to the west of the centers of [[Round Lake (village), New York|Round Lake]] at exit&nbsp;11 and [[Malta, New York|Malta]] at exit&nbsp;12. The roadway then meets [[U.S. Route 9 in New York|US&nbsp;9]] at Exit 13, a [[cloverleaf interchange]] providing access to [[Saratoga Spa State Park]] and downtown Saratoga Springs.  I-87 turns slightly to the northeast and begins to loosely parallel the northwestern edge of [[Saratoga Lake]] as it crosses [[Kayaderosseras Creek]] and enters [[Saratoga Springs, New York|Saratoga Springs]].<ref name="google" />

As the route travels the east side of Saratoga Springs, it meets [[New York State Route 9P|NY&nbsp;9P]] at exit&nbsp;14. The junction is adjacent to the regionally popular [[Saratoga Race Course]] and thus receives heavy traffic during the racing season. A southbound-only entrance ramp exists off Nelson Avenue Extension about {{convert|1|mi|km|spell=on}} south of exit&nbsp;14, designed to handle traffic exiting the track at [[Saratoga Race Course]] and the [[Saratoga Casino Hotel]]. The highway continues around the eastern edge of Saratoga Springs to exit&nbsp;15, where the relatively undeveloped areas east of I-87 are briefly replaced by [[Wilton, New York|Wilton]]'s commercial district along [[New York State Route 50|NY&nbsp;50]]. As I-87 continues northeast through Wilton, it heads across significantly less developed areas, with open fields becoming the most common feature along the road. It continues into [[Moreau, New York|Moreau]], connecting to [[U.S. Route 9 in New York|US&nbsp;9]] and serving [[Moreau Lake State Park]] by way of exit&nbsp;17, a once [[cloverleaf interchange]] being converted to a "Parclo A2" [[Partial cloverleaf interchange]], before crossing the Hudson River and entering [[Warren County, New York|Warren County]].<ref name="google" />

====Warren and Essex counties====
[[File:View north along I-87, Adirondack Northway, in Warren County, NY.jpg|thumb|Northbound Northway in Warren County between exits&nbsp;23 and 24|alt=A view of a divided highway from its righthand roadway, with two lanes separated by a dashed white line. There is almost no other traffic; the surrounding area is wooded with some autumn color visible. Ahead the roadways curves by a hill and disappears.]]
Between the bridge and exit&nbsp;18, I-87 passes two rest areas, one for each direction. The road's northward course quickly brings it to the outskirts of [[Glens Falls, New York|Glens Falls]], and as such the highway heads across another swath of residential neighborhoods. Exits&nbsp;18 and&nbsp;19 are the main exits for the city, with the latter connecting to [[New York State Route 254|NY&nbsp;254]] near [[Aviation Mall]], located on NY&nbsp;254 just west of the route's junction with US&nbsp;9. A northwestern turn in the freeway takes I-87 past the [[Great Escape (amusement park)|Great Escape]] amusement park and [[Six Flags Great Escape Lodge & Indoor Waterpark|lodge]], both of which are accessed from exit&nbsp;20 and [[New York State Route 149|NY&nbsp;149]]. Past exit&nbsp;20, I-87 runs across increasingly remote areas of Queensbury as the road enters [[Adirondack Park]] and heads toward [[Lake George (town), New York|Lake George]]. The freeway closely follows US&nbsp;9 northwest to the village of [[Lake George (village), New York|Lake George]], where I-87 meets [[New York State Route 9N|NY&nbsp;9N]] via exits&nbsp;21 and&nbsp;22. Route&nbsp;9N veers to the northeast along the shore of Lake George as "Lake Shore Drive", toward the town of [[Bolton Landing, New York|Bolton Landing]], a popular village on the shore of Lake George with shops and restaurants. Exit&nbsp;22 is the last exit before the Northway begins traversing approximately {{convert|90|mi|km}} of mostly rural areas where the exits become farther apart. Here, the Northway narrows from six to four lanes, preparing for the more rural areas and rugged terrain that follow.<ref name="google" />
[[File:View N along I-87 to Adirondack High Peaks region.jpg|thumb|left|View to [[Adirondack High Peaks|High Peaks]] region from the northbound side of the Northway in [[Schroon Lake (hamlet), New York|Schroon Lake]]|alt=A two-lane roadway with a white dashed line in the center, white solid line at the right edge, dashed yellow line at the left and brown metal guardrail alongside the left edge, with woods on either side, drops down a slope in the foreground. In the distance, blue with haze, is an irregular, ragged ridgeline]]
North of Lake George, the Northway runs alongside US&nbsp;9 to [[Warrensburg, New York|Warrensburg]], a small town on the [[Schroon River]] served by exit&nbsp;23. The view straight ahead on the northbound side from this interchange acts as an unofficial gateway to the Adirondacks, with tall mountains acting as a backdrop to a straight stretch of highway. While US&nbsp;9 heads northwest into the [[Warrensburg, New York|Warrensburg]] to connect to [[New York State Route 28|NY&nbsp;28]], I-87 turns northward to follow the east bank of the Schroon River for {{convert|17|mi|km}} through a deep, remote valley. The Northway reaches exit&nbsp;24 while in this valley, which once again serves the town of [[Bolton Landing, New York|Bolton Landing]]. Exit&nbsp;25 serves [[New York State Route 8|NY&nbsp;8]] at a [[diamond interchange]]. The stretch away from US&nbsp;9 ends at exit&nbsp;26, where I-87 reconnects to US&nbsp;9 in [[Pottersville, New York|Pottersville]]. At this point, I-87 makes a slight turn to the northeast to follow US&nbsp;9 as the latter road runs along the western shoreline of Schroon Lake. Both roads pass a handful of lakefront properties on their way into [[Essex County, New York|Essex County]] and the town of [[Schroon Lake (hamlet), New York|Schroon Lake]], where the lake comes to an end and [[New York State Route 74|NY&nbsp;74]] begins its eastward trek to [[Ticonderoga, New York|Ticonderoga]] at exit&nbsp;28. The Schroon River resumes north of the exit, and I-87 and US&nbsp;9 follow the river and its rural valley to the northeast for {{convert|15|mi|km}} to the town of [[North Hudson, New York|North Hudson]].<ref name="google" />

In North Hudson, the valley becomes less pronounced as the Schroon River reaches its [[river source|source]] near exit&nbsp;30. Here, US&nbsp;9 and I-87 cross paths again, with the former heading northwest toward [[Keene, New York|Keene]] and the latter continuing northeast in a narrow valley formed by Ash Craft Brook. After {{convert|5|mi|km|spell=in}}, the stream reaches its source at Lincoln Pond, leaving the Northway to climb in elevation and wind its way northeastward across the surrounding mountains. It reaches slightly more level ground in [[Westport, New York|Westport]], where I-87 connects to NY&nbsp;9N at exit&nbsp;31. From here, the highway takes a generally northerly track across the [[Boquet River]] to the town of [[Lewis, Essex County, New York|Lewis]], rejoining US&nbsp;9 as both roads head toward [[Clinton County, New York|Clinton County]]. They split again after {{convert|7|mi|km|spell=in}} as US&nbsp;9 veers more easterly than I-87 to serve [[Keeseville, New York|Keeseville]]. The Northway, meanwhile, heads to the northwest, bypassing the village to cross the [[Ausable River (New York)|Ausable River]] and enter Clinton County.<ref name="google" />

====Clinton County====
Just across the county line, I-87 intersects NY&nbsp;9N again at exit&nbsp;34 in [[Keeseville, New York|Keeseville]], finally leaving the more rural, mountainous areas of the [[Adirondack Mountains]] and entering a more populated region. Exit&nbsp;34 is the southernmost junction to feature [[bilingual]] guide signs in [[English language|English]] and [[French language|French]] due to the road's proximity to [[Quebec]]. Beyond NY&nbsp;9N, the Northway curves to the north, running along the west side of Keeseville before entering another rural but fairly level stretch that follows I-87 out of Adirondack Park. Now outside the park, the highway encounters more frequent pockets of development as it follows [[New York State Route 22|NY&nbsp;22]] into the town of [[Plattsburgh (town), New York|Plattsburgh]]. Just inside the town line, the Northway crosses over the Salmon River and intersects NY&nbsp;22 at exit&nbsp;36, a junction serving nearby [[Plattsburgh International Airport]]. While NY&nbsp;22 heads northeast into the city of [[Plattsburgh, New York|Plattsburgh]], I-87 runs north through its western suburbs, passing over the [[Saranac River]] and intersecting [[New York State Route 3|NY&nbsp;3]] at exit 37. The Northway and NY&nbsp;22 meet again north of downtown at exit&nbsp;38.<ref name="google" />

[[File:Northway Exit 34 (NY 915F).jpg|thumb|right|Bilingual sign for exit&nbsp;34 (NY&nbsp;9N) in [[Keeseville, New York|Keeseville]]]]
The section of I-87 between exits&nbsp;38 and&nbsp;39 crosses a marshy area surrounding Dead Creek, a stream feeding into nearby [[Plattsburgh Bay]]. Access to the bay shore is provided off to the northeast by exit&nbsp;39, a modified cloverleaf interchange for [[New York State Route 314|NY&nbsp;314]]. Continuing away from the junction, I-87 comes within {{convert|1|mi|km|spell=in}} of [[Lake Champlain]] as it follows US&nbsp;9 away from Plattsburgh and northward across open, rolling fields in the towns of [[Beekmantown, New York|Beekmantown]] and [[Chazy, New York|Chazy]]. Outside of the hamlet of Chazy, the Northway begins to run across a series of [[wetland]]s along the west side of US&nbsp;9. The marshy terrain follows I-87 into the town of Champlain, where I-87 encounters the northernmost community along its course, the village of [[Champlain (village), New York|Champlain]]. I-87 veers slightly westward to avoid the village, and in doing so it meets [[U.S. Route 11 in New York|US&nbsp;11]] at exit&nbsp;42, a diamond interchange just west of the village limits.<ref name="google" />
[[File:I-87 last mile to Canadian border.jpg|left|thumb|Approach to Canada–United States border in [[Champlain, New York|Champlain]]|alt=A divided highway going across a level landscape. On the right is a sign in English and French saying "Last U.S. Exit/Derniere Sortie EE. U." On the left the road goes away from the camera, up a slight rise to a more built-up area with a tall antenna.]]
I-87 takes a northerly track from US&nbsp;11, crossing the [[Chazy River]] and briefly entering the village limits, where it runs past a series of homes and businesses built up along nearby US&nbsp;9. As both roads head north out of the village, US&nbsp;9 connects to the Northway one last time (also the northern terminus of US&nbsp;9) at exit&nbsp;43, the last interchange on I-87 before the Canada–United States border. Past the exit, the highway doubles in width, becoming eight lanes wide as it begins to run past the customs facilities on the American side of the border. The Northway and I-87 end shortly thereafter at the Canada–United States border, where the highway continues past the [[Champlain–St. Bernard de Lacolle Border Crossing]] into Quebec as [[Quebec Autoroute 15|A-15]] toward Montreal.<ref name="google" />