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Interstate 87

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Title: Interstate 87  
Author: World Heritage Encyclopedia
Language: English
Subject: U.S. Route 9 in New York, Interstate 287, Interstate 687, New York State Route 254, New York State Thruway
Collection: Expressways in New York City, Interstate 87, Interstate Highway System, Interstate Highways in New York, New York State Thruway Authority, Robert Moses Projects, Transportation in Albany County, New York, Transportation in Clinton County, New York, Transportation in Essex County, New York, Transportation in Greene County, New York, Transportation in Orange County, New York, Transportation in Rockland County, New York, Transportation in Saratoga County, New York, Transportation in the Bronx, Transportation in Ulster County, New York, Transportation in Warren County, New York, Transportation in Westchester County, New York, Transportation in Yonkers, New York
Publisher: World Heritage Encyclopedia

Interstate 87

Interstate 87 marker

Interstate 87
Route information
Maintained by NYSTA and NYSDOT
Length: 333.49 mi[1] (536.70 km)
Existed: August 14, 1957 (1957-08-14)[2] – present
Major junctions
South end: I-278 in The Bronx
North end: A-15 at the Canadian border in Champlain
Highway system
NY 86A NY 87

Interstate 87 (I-87) is a 333.49-mile-long (536.70 km) Interstate Highway located entirely within the U.S. state of New York, and is part of the main highway between New York City and Montreal. The highway begins in the Bronx borough of New York City, just north of the Triborough Bridge. From there, the route runs northward through the Hudson Valley, the Capital District, and the easternmost part of the North Country to the Canadian border in the Town of Champlain. At its north end, I-87 continues into Quebec as Autoroute 15 (A-15). I-87 connects with several regionally important roads: I-95 in New York City, New York State Route 17 (NY 17; future I-86) near Harriman, I-84 near Newburgh, and I-90 in Albany. The route is the longest intrastate Interstate Highway in the Interstate Highway System.

I-87 was assigned in 1957 as part of the establishment of the Interstate Highway System. The portion of I-87 south of Albany follows freeways that predate the Interstate Highway designation, namely, the Major Deegan Expressway in New York City and the New York State Thruway from the New York City line to Albany. North of Albany, I-87 follows the Adirondack Northway, a highway built in stages between 1957 and 1967. Early proposals for I-87 called for the route to take a more easterly course through the Hudson Valley between New York City and Newburgh. These plans were scrapped in 1970 when I-87 was realigned onto the Thruway between Westchester County and Newburgh.


  • Route description 1
    • South of Albany 1.1
      • Major Deegan Expressway 1.1.1
      • New York State Thruway 1.1.2
    • Adirondack Northway 1.2
      • Albany and Saratoga counties 1.2.1
      • Warren and Essex counties 1.2.2
      • Clinton County 1.2.3
  • History 2
    • Designation and early construction 2.1
    • Filling the gaps 2.2
    • Tappan Zee Bridge replacement 2.3
    • Other developments 2.4
  • Exit list 3
  • Auxiliary routes 4
  • See also 5
  • References 6
  • External links 7

Route description

I-87 is part of a major strategic corridor between New York City, the largest metropolitan area in the U.S., and Montreal, the second largest in Canada. The New York State Department of Transportation (NYSDOT) considers the route important for commerce, as it connects with numerous highways in the region and serves approximately 80 million people along the Mid-Atlantic States, New England, and Quebec. Motorists can connect to multiple highways on 87 to travel further south along I-95 through the mid-Atlantic states, or through numerous other highways to travel further east into New England.[3]

South of Albany

Major Deegan Expressway

The Major Deegan Expressway carrying I-87 in the West Bronx

I-87 begins in the Bronx at the northern approach to the Triborough Bridge, where it connects to the Bruckner Expressway (I-278) at a directional T interchange. The route heads west from the interchange, paralleling loosely with the Harlem River through Mott Haven. After 1 mile (1.6 km), the highway makes a turn to the north, mirroring a change in the nearby river's course. It passes by Yankee Stadium on its way to Highbridge, where the Deegan connects to the Cross Bronx Expressway (I-95 and U.S. Route 1 or US 1) at the eastern approach to the Alexander Hamilton Bridge. The Deegan remains in close proximity to the Harlem River until the waterway turns westward at Kingsbridge to form the northern edge of Manhattan.[4]

North of Kingsbridge, I-87 generally follows a northeastern alignment, passing through the center of Van Cortlandt Park as it connects to Mosholu Parkway and Jerome Avenue. Mosholu Parkway also links I-87 to the Henry Hudson and Saw Mill River parkways, which run parallel to the Major Deegan Expressway through the western Bronx and Manhattan. Past Jerome Avenue, the freeway gains a pair of service roads and heads north to the New York CityYonkers border.[4]

New York State Thruway

Looking east along I-87 toward the Tappan Zee Bridge from Nordkop Mountain in Suffern

At the New York City–Yonkers border, I-87 changes to the New York State Thruway as the mainline proceeds northward through Yonkers and southern Westchester County. It connects with Central Park Avenue (NY 100) at exit 1, the first of 12 exits within the county. The first few exits serve various local streets, with exit 2 providing access to Yonkers Raceway and exit 3 serving the Cross County Shopping Center. At exit 4, I-87 connects to the Cross County Parkway, an east–west parkway providing access to the Saw Mill River, Bronx River, and Hutchinson River parkways. The north-south parkways and I-95 run parallel to the Thruway through Southern Westchester. The Bronx River parkway leaves to the northeast midway through Yonkers, while the Saw Mill and Sprain Brook parkways follow the Thruway out of the city.[5]

All three highways take generally parallel tracks to Elmsford, where I-87 directly intersects the Saw Mill River Parkway at exit 7A. Not far to the north is exit 8, a semi-directional T interchange with I-287 (the Cross-Westchester Expressway). I-287 joins the Thruway here, following I-87 west across the Hudson River into Rockland County on the Tappan Zee Bridge. I-87 and I-287 remain overlapped for 15 miles (24 km) through the densely populated southern portion of Rockland County, meeting the Palisades Interstate Parkway and the New York segment of the Garden State Parkway at exits 13 and 14A, respectively. The Thruway continues generally westward to Suffern, where I-87 and I-287 split at a large semi-directional T interchange (exit 15) near the New Jersey border. At this point, I-287 heads south into New Jersey while I-87 and the Thruway turn northward into the valley of the Ramapo River.[5]

Far view of the Tappan Zee Bridge

The Thruway continues north through the river valley toward Harriman, where it encounters the Woodbury toll barrier, the southeastern end of the mainline's major closed ticket system. The barrier is located on the mainline within exit 16 (NY 17), a trumpet interchange. Along with the mainline barrier in Harriman, a separate toll plaza exists on the exit 16 ramp midway between the Thruway and NY 17 exit 131 (NY 32). Now a completely tolled highway, the Thruway heads northward, roughly paralleling the Hudson River to the river's west as it serves the city of Newburgh, the village of New Paltz, and the city of Kingston, indirectly connecting to the short I-587 in the latter.[5]

Past Kingston, the highway runs closer to the river as it parallels U.S. Route 9W (US 9W) through the towns of Saugerties, Catskill, Coxsackie, and Ravena. Just north of Ravena, the Thruway meets the west end of the Berkshire Connector, a spur linking the Thruway mainline to the Massachusetts Turnpike 25 miles (40 km) to the east. The highway continues into the vicinity of Albany, where it connects to Troy via I-787 at exit 23 and intersects I-90 at exit 24.[5] The latter of the two junctions is the busiest of the Thruway's exits, serving an estimated 27 million vehicles a year.[6] I-87 then runs across the capital city's residential suburbs for 6 miles (9.7 km) to exit 24, a complex interchange with I-90. At this point, I-87 leaves the Thruway to access the nearby south end of the toll-free Adirondack Northway, also known simply as the Northway, while I-90 merges in from the east to follow the Thruway toward Pennsylvania.[4][5]

Adirondack Northway

Off the Thruway, I-87 and I-90 overlap for a half-mile along I-90's toll-free path through the Albany area. The brief concurrency ends at exit 1 of the Adirondack Northway in Guilderland, a junction also numbered as exit 1 on I-90. Here, I-87 turns to head north toward the Canadian border at Champlain while I-90 continues east toward downtown Albany and Rensselaer County.[4] South of this point, the Northway feeds into a 0.86-mile (1.38 km) expressway spur known locally as Fuller Road Alternate,[1] which links I-87 and I-90 to US 20.[4] Fuller Road Alternate is designated as NY 910F, an unsigned reference route, by the New York State Department of Transportation (NYSDOT).[1] In 2004, NYSDOT ceremonially designated the entire 176-mile (283 km) Northway as the Adirondack Veterans Memorial Highway.[7]

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. Wolf Road itself begins adjacent to exit 2, a cloverleaf interchange with NY 5 (Central Avenue). Heading northbound, the ramp for exit 2E feeds directly into the intersection of NY 5 and Wolf Road, located just west of Colonie Center, one of the Capital District's largest enclosed shopping malls. I-87 continues to run alongside Wolf Road to exit 4, a modified diamond interchange serving County Route 151 (CR 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 NY 155 away from the airport. Prior to the Thruway, there was no break in Wolf Road; in essence, Exit 4 was built on top of Wolf Road's intersection with Watervliet Shaker Road. I-87 and NY 155 meet at exit 5, with the latter routed along Watervliet Shaker Road.[4]

The Thaddeus Kosciusko Bridge carries I-87 over the Mohawk River.

After a brief stretch of housing tracts, I-87 connects to NY 2 and NY 7 at exit 6, a single-point urban interchange, in a commercialized part of Latham. NY 7 joins I-87 here, following the freeway for roughly 0.8 miles (1.3 km) to exit 7, the west end of a limited-access highway previously known locally as Alternate Route 7. While NY 7 heads east toward 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 by way of the Thaddeus Kosciusko Bridge, called by locals "the twin bridges", spanning the Mohawk River.[4] 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.[8]

For its first few miles in Saratoga County, I-87 runs across lightly developed parts of the towns of Halfmoon and Clifton Park. Near exit 9, however, the freeway passes through the commercial center of Clifton Park as it connects to NY 146. Clifton Park Center, one of several shopping plazas at the junction, is situated southwest of the exit. Past exit 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 at exit 11 and Malta at exit 12. After Malta, 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.[4]

As the route comes close to downtown Saratoga Springs, it meets NY 9P at exit 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 1 mile (1.6 km) south of exit 14, designed to handle traffic exiting the track at Saratoga Race Course and the Saratoga Casino and Raceway. The highway continues around the eastern edge of Saratoga Springs to exit 15, where the relatively undeveloped areas east of I-87 are briefly replaced by Wilton's commercial district along NY 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, connecting to US 9 and serving Moreau Lake State Park by way of exit 17, a cloverleaf interchange, before crossing the Hudson River and entering Warren County.[4]

Warren and Essex counties

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.
Northbound Northway in Warren County

Between the bridge and exit 18, I-87 passes two rest areas, one for each direction. The road's northward course through NY 9N via exits 21 and 22.[4]

North of Lake George, I-87 narrows from six to four lanes as it runs alongside US 9 to Warrensburg, a small hamlet on the Schroon River served by exit 23. While US 9 heads northwest into the community, I-87 turns northward to follow the east bank of the Schroon River for 17 miles (27 km) through a deep, remote valley. The stretch ends at exit 27, where I-87 reconnects to US 9 at the southern tip of Schroon Lake. At this point, I-87 makes a slight turn to the northeast to follow US 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 and the town of Schroon, where the lake comes to an end and NY 74 begins its eastward trek to Ticonderoga at exit 28. The Schroon River resumes north of the exit, and I-87 and US 9 follow the river and its rural valley to the northeast for 15 miles (24 km) to the town of North Hudson.[4]

In North Hudson, the valley becomes less pronounced as the Schroon River reaches its source near exit 30. Here, US 9 and I-87 cross paths again, with the former heading northwest toward Keene and the latter continuing northeast in a narrow valley formed by Ash Craft Brook. After 5 miles (8.0 km), 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, where I-87 connects to NY 9N at exit 31. From here, the highway takes a generally northerly track across the Bouquet River to the town of Lewis, rejoining US 9 as both roads head toward Clinton County. They split again after 7 miles (11 km) as US 9 veers more easterly than I-87 to serve Keeseville. The Northway, meanwhile, heads to the northwest, bypassing the village to cross the Ausable River and enter Clinton County.[4]

Clinton County

Just across the county line, I-87 intersects NY 9N again at exit 34, the southernmost junction to feature bilingual guide signs in English and French due to the road's proximity to Quebec. Past NY 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 NY 22 into the town of Plattsburgh. Just inside the town line, the Northway crosses over the Salmon River and intersects NY 22 at exit 36, a junction serving nearby Plattsburgh International Airport. While NY 22 heads northeast into the city of Plattsburgh, I-87 runs north through its western suburbs, passing over the Saranac River and intersecting NY 3 at exit 37. The Northway and NY 22 meet again north of downtown at exit 38.[4]

Bilingual sign for exit 34 (NY 9N) in Ausable

The section of I-87 between exits 38 and 39 crosses a marshy area surrounding Dead Creek, a stream feeding into nearby Cumberland Bay. Access to the bay shore is provided off to the northeast by exit 39, a modified cloverleaf interchange for NY 314. Continuing away from the junction, I-87 comes within 1 mile (1.6 km) of Lake Champlain as it follows US 9 away from Plattsburgh and northward across open, rolling fields in the towns of Beekmantown and Chazy. Outside of the hamlet of Chazy, the Northway begins to run across a series of wetlands along the west side of US 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. I-87 veers slightly westward to avoid the village, and in doing so it meets US 11 at exit 42, a diamond interchange just west of the village limits.[4]

A divided highway going across a level landscape. On the right is a sign in English and French saying
Approach to Canadian border

I-87 takes a northerly track from US 11, crossing the Great Chazy River and briefly entering the village limits, where it runs past a series of homes and businesses built up along nearby US 9. As both roads head north out of the village, US 9 connects to the Northway one last time at exit 43, the last interchange on I-87 before the Canadian 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 Canadian border, where the highway continues past the Champlain-St. Bernard de Lacolle Border Crossing into Quebec as A-15.[4]


Designation and early construction

I-87 was assigned on August 14, 1957, as part of the establishment of the Interstate Highway System.[2] The highway initially utilized the pre-existing New York State Thruway from Albany to Newburgh and in lower Westchester County, and the Major Deegan Expressway in New York City. From Newburgh to the Elmsford area, I-87 was to follow a new highway running parallel to US 9 northward along the eastern bank of the Hudson River to Fishkill. I-87 would then have followed the proposed I-84 across the Hudson to rejoin the Thruway outside of Newburgh. Meanwhile, all of the Adirondack Northway, the portion of I-87 slated to extend from Albany north to the Canadian border, had yet to be built.[9][10] Fuller Road Alternate, the spur leading south from the Adirondack Northway to US 20, was originally intended to be part of the Southern Albany Expressway, a proposed highway which would have connected the Northway with I-787 and run parallel to the Thruway between exits 23 and 24.[11]

Map of NY 912Q, once part of I-87

The Northway 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

  • Interstate 87 at Alps' Roads • New York Routes • Upstate New York Roads
  • Aerial photos of both ends of I-87
  • Covering I-87, the Adirondack Northway from Albany to Quebec through the Adirondacks
  • I-87 (Greater New York Roads)

External links

  1. ^ a b c d e f g "2011 Traffic Volume Report for New York State" (PDF).  
  2. ^ a b  
  3. ^ Parsons-Clough Harbour (May 2004). "2.1: Highways and Bridges" (PDF). I-87 Multimodal Corridor Study. New York State Department of Transportation. p. 2.1-1. Retrieved August 14, 2015. 
  4. ^ a b c d e f g h i j k l m n o p  
  5. ^ a b c d e New York State Thruway Authority (2015). Traveler Map (Map). Cartography by Google. Albany: New York State Thruway Authority. Retrieved August 3, 2015. 
  6. ^ "At a transportation crossroad".  
  7. ^ "Northway renamed for veterans".  
  8. ^ Aaron, Kenneth (October 3, 2004). "Growing predicament".  
  9. ^  
  10. ^ a b  
  11. ^ Johnson, Carl (March 8, 2011). "The Highway that Was Almost Buried Under Washington Park". All Over Albany. Archived from the original on August 5, 2015. 
  12. ^ Esso; General Drafting (1954). New York with Special Maps of Putnam–Rockland–Westchester Counties and Finger Lakes Region (Map) (1955–56 ed.). Esso. 
  13. ^ a b  
  14. ^ "Governor to Cut Ribbon on Northway Link". The Warrensburg News. May 25, 1961. p. 1. 
  15. ^ a b c d Consumer Price Index (estimate) 1800–2014. Federal Reserve Bank of Minneapolis. Retrieved February 27, 2014.
  16. ^ "New 7-Mile Section of Northway Opened". The Warrensburg News. November 30, 1961. sec. 2, p. 3. 
  17. ^ "The Troy & Schenectady Railroad, Now It Is A Bike Path". Retrieved December 8, 2011. 
  18. ^ Esso; General Drafting (1962). New York with Sight-Seeing Guide (Map). Esso. 
  19. ^ a b c "Two Major Expressways Are Half-Way Completed". Evening Recorder (Amsterdam, NY). July 17, 1963. p. 8. 
  20. ^  
  21. ^ Lamy, Margaret (May 18, 1966). "Big Gaps Are Being Closed in the Link Between the Thruway and Canada".  
  22. ^  
  23. ^ a b "Cite Northway; Rocky Accepts Award at Capitol Ceremony". Warrensburg–Lake George News. March 9, 1967. pp. 2, 16. 
  24. ^ a b Esso; General Drafting (1968). New York (Map) (1969–70 ed.). Esso. 
  25. ^ "Governor Opens Link of N'Way at Keesville [sic]". Adirondack Life (Warrensburg–Lake George News). July 20, 1967. p. 9. 
  26. ^ a b Phillips, McCandlish (August 29, 1967). "Last Link to Open on the Northway". The New York Times. p. 39. Retrieved December 26, 2012. 
  27. ^  
  28. ^ Sinclair Oil Corporation; Rand McNally and Company (1962). New York and Metropolitan New York (Map). Sinclair Oil Corporation. 
  29. ^  
  30. ^ State of New York Department of Transportation (January 1, 1970). Official Description of Touring Routes in New York State (PDF). Retrieved May 13, 2009. 
  31. ^ McGeehan, Patrick (January 17, 2006). "A Bridge That Has Nowhere Left to Go". The New York Times. Retrieved February 27, 2010. 
  32. ^  
  33. ^ "New Tappan Zee will be world's widest bridge". 
  34. ^ "DOT to Erect Signs on N'thway Noting Limited Cell Service". Albany, NY:  
  35. ^ Smith Dedam, Kim (November 21, 2008). "Verizon lights up second I-87 cell tower".  
  36. ^  
  37. ^ a b "I-87 Exit 6 Bridge Replacement". New York State Department of Transportation. 2010. Retrieved November 23, 2010. 
  38. ^ "I-87 Exit 6 Bridge Replacement – News/Updates". New York State Department of Transportation. 2010. Retrieved November 23, 2010. 
  39. ^ a b "History". Adirondack Northway Exit 3 Project. New York State Department of Transportation. Retrieved June 11, 2010. 
  40. ^ Halligan, Lauren (February 17, 2015). "Bridge work on I-87 to begin Monday". Saratogian News. Retrieved September 17, 2015. 
  41. ^ Google (August 2014). "Street View". Google Maps. Google. Retrieved July 11, 2015. 
  42. ^ a b c Office of Technical Services (2014). "Inventory Listing". Engineering Division,  
    • Albany County
    • Saratoga County
    • Warren County
    • Essex County
    • Clinton County
  43. ^ "I-287 Straight Line Diagram" (PDF).  
  44. ^ "Governor Signs River Road Bill; Overrides Protests Against Hudson Expressway".  
  45. ^ a b Bird, David (November 21, 1971). "Hudson Expressway Plan Is 'Dead,' Rockefeller Says". The New York Times. Retrieved September 2, 2008. 
  46. ^ "State Bids U.S. Delete Interstate 687 Approval".  


See also

Two other spurs of I-87 were planned but never constructed. In the Hudson Valley, I-487 would have run along the Hudson River from I-87 and I-287 in Tarrytown to I-84 east of Beacon.[44][45] The other spur, I-687, would have connected I-90 in Albany to I-87 near Albany International Airport in Colonie.[39] Both routes were cancelled in the 1970s as a result of public opposition.[45][46]

The road has three current spur routes, all located along the Thruway portion of I-87.[1] I-287 serves as a 99-mile (159 km) bypass around New York City, beginning at the New Jersey Turnpike in Middlesex County, New Jersey, and ending at I-95 (the New England Thruway) near the Connecticut border in Rye. I-287 and I-87 overlap for 19 miles (31 km) across Westchester and Rockland counties.[1][43] East of the concurrency, I-287 is known as the Cross-Westchester Expressway.[4] The other two spurs, the 2-mile (3.2 km) I-587 and the 10-mile (16 km) I-787, link I-87 to the cities of Kingston and Albany, respectively.[1]

Auxiliary routes

County Location[42] mi[42] km Exit Destinations Notes
Albany Albany 0.00 0.00 To US 20 (Western Avenue) Continuation from NY 910F
0.40 0.64 1E I-90 east – Albany, Boston
1W New York Thruway / I-87 south / I-90 west – New York, Buffalo Northern end of concurrency with the Thruway
Village of Colonie 1.32 2.12 2E NY 5 east (Central Avenue) / Wolf Road – Albany Wolf Road only appears on northbound signage
2W NY 5 west (Central Avenue) – Schenectady
Town of Colonie 3.06 4.92 4 Wolf Road – Albany International Airport Northbound signage
NY 155 west – Albany International Airport Southbound signage
4.21 6.78 5 NY 155 – Latham Northbound signage
NY 155 east – Latham Southbound signage
5.46 8.79 6 NY 7 west / NY 2 east – Schenectady, Watervliet Southern end of concurrency with NY 7
6.01 9.67 7 NY 7 east – Troy, Cohoes Northern end of concurrency with NY 7
Mohawk River 8.24 13.26 Thaddeus Kosciusko Bridge
Albany–Saratoga county line
Saratoga Halfmoon 10.25 16.50 8 Vischer Ferry, Crescent
Clifton Park 11.56 18.60 8A Grooms Road (CR 91) – Waterford
13.10 21.08 9 NY 146 – Clifton Park, Halfmoon Signed as Exits 9W (west) and 9E (east) southbound
16.00 25.75 10 Ushers Road – Jonesville, Ballston Lake Ballston Lake only appears on northbound signage
Round Lake 18.56 29.87 11 Burnt Hills, Round Lake
Malta 20.86 33.57 12 NY 67 – Ballston Spa, Malta
24.54 39.49 13S US 9 south – Saratoga Lake Northbound signage
US 9 south – Ballston Spa Southbound signage
13N US 9 north – Saratoga Springs
Saratoga Springs 28.56 45.96 14 NY 9P (Union Avenue) / NY 29 – Saratoga Springs, Schuylerville, Saratoga Lake NY 29 only appears on northbound signage
30.35 48.84 15 NY 50 / NY 29 – Saratoga Springs, Gansevoort, Schuylerville NY 29 only appears on southbound signage
Wilton 35.86 57.71 16 Ballard Road – Wilton, Corinth, Gansevoort
Moreau 40.64 65.40 17N US 9 north – South Glens Falls
17S US 9 south – Moreau Lake State Park
Hudson River 42.73 68.77 Saratoga–Warren county line
Warren Queensbury 45.17 72.69 18 CR 28 – Glens Falls, Corinth
47.52 76.48 19 NY 254 – Glens Falls, Hudson Falls Hudson Falls only appears on southbound signage
49.80 80.15 20 NY 149 – Fort Ann, Whitehall
Queensbury–Lake George town line 51.23 82.45 Southern boundary of Adirondack Park
Town of Lake George 52.98 85.26 21 Lake George Lake George Village only appears on northbound signage
55.02 88.55 22 Diamond Point Diamond Point only appears on northbound signage
59.45 95.68 23 Diamond Point Road (CR 35) – Warrensburg, Diamond Point
Town of Warrensburg 67.85 109.19 24 Riverbank Road (CR 11) – Bolton Landing
Chester 73.22 117.84 25 NY 8 – Chestertown, Hague
26 US 9 – Pottersville, Minerva
Essex Schroon 81.99 131.95 27 US 9 – Schroon Lake Northbound exit and southbound entrance
88.70 142.75 28 NY 74 east – Ticonderoga, Crown Point Also serves Fort Ticonderoga
North Hudson 94.63 152.29 29 Blue Ridge Road – Newcomb, North Hudson
104.46 168.11 30 US 9 / NY 73 – Keene Valley, Keene, North Hudson
Westport 117.58 189.23 31 NY 9N – Elizabethtown, Westport
Lewis 123.48 198.72 32 Stowersville Road (CR 12) – Lewis, Willsboro Willsboro only appears on northbound signage
Chesterfield 134.98 217.23 33 US 9 / NY 22 – Keeseville, Willsboro, Essex
Ausable River 138.34 222.64 Essex–Clinton county line
Clinton Au Sable 138.74 223.28 34 NY 9N – Au Sable Forks, Keeseville
Au Sable–Peru town line 142.41 229.19 Northern boundary of Adirondack Park
Peru 144.51 232.57 35 NY 442 (Bear Swamp Road) – Peru, Valcour, Port Kent
Town of Plattsburgh 150.10 241.56 36 NY 22 – Plattsburgh International Airport
153.06 246.33 37 NY 3 – Plattsburgh, Saranac Lake Saranac Lake only appears on northbound signage
154.87 249.24 38S NY 22 south – Plattsburgh
38N NY 22 north / NY 374 west – Dannemora
156.36 251.64 39 NY 314 east – Cumberland Head, Plattsburgh Bay Signed as Exit 39E southbound
39N Moffitt Road Southbound exit; northbound exit is part of Exit 39
Beekmantown 160.18 257.78 40 NY 456 – Beekmantown, Point au Roche
Chazy 167.77 270.00 41 NY 191 – Chazy, Sciota
Town of Champlain 174.21 280.36 42 US 11 – Mooers, Rouses Point
175.53 282.49 43 US 9 – Champlain
176.16 283.50 A-15 north – Montreal Continuation into Canada at Saint-Bernard-de-Lacolle, Quebec
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

The mileposts below follow actual signage, where mile 0.00 is located just north of the overpass with I-90.[41][42]

The list below contains the exits along the Adirondack Northway. For exits within New York City, see the Major Deegan Expressway's exit list. For exits along the New York State Thruway, see Exits 1 to 24 of the Thruway mainline's exit list.

Exit list

There is no exit 3 on the Northway section of I-87, as this number was reserved for an interchange with the cancelled I-687.[39] A project to improve access to the Albany International Airport at exit 4 is currently underway. The two old bridges at exit 4 that carry 102,000 vehicles a day are deteriorating and subsequently are being replaced. Once the new replacement bridges are built, the old bridges will be demolished. Construction began in February 2015 and is expected to be completed by October 31, 2015.[40]

Exit 6 on the Adirondack Northway was originally a diamond interchange.[36] Construction to convert the junction into a single-point urban interchange began in mid-2008[37] and was completed on September 12, 2010.[38] The total cost of the project was $41.9 million.[37]

A long stretch of the Northway through the Adirondack Park had been an unserved zone for cellular telephone service. In 2007, a driver who crashed off the road was unable to summon help, prompting messages from local governments to telephone companies to add new wireless towers to address the problem and warning signs to inform travelers of the so-called "dark zone".[34] Throughout this area, roadside emergency call boxes are located approximately every two miles on both sides of the roadway. These boxes use a two-way UHF radio network to connect directly to New York State Police dispatchers. The first of 13 new cellular phone towers along I-87 was installed in October 2008. A second cellular phone tower was completed just one month later.[35]

Other developments

State and federal agencies are in the process of replacing the Tappan Zee Bridge over New York's Hudson River. The original Tappan Zee bridge is a cantilever bridge built during 1952–55. The bridge is three miles (4.8 km) long and spans the Hudson at its second-widest point. The deteriorating current structure bears an average of 138,000 vehicles per day, substantially more traffic than its designed capacity. During its first decade, the bridge carried fewer than 40,000 vehicles per day. Part of the justification for replacing the bridge stems from its construction immediately following the Korean War on a low budget of only $81 million. Unlike other major bridges in metropolitan New York, the Tappan Zee was designed to last only 50 years.[31] The Federal Highway Administration issued a report in October 2011 designating the Tappan Zee's replacement to be a dual-span twin bridge. The new bridge is now under construction a few yards to the north of the existing bridge, and will connect to the existing highway approaches of the New York State Thruway (I-87/I-287) on both river banks.[32] Construction began in 2013, with opening targeted for 2018. When completed in 2018, the new Tappan Zee Bridge will be one of the longest cable-stayed spans in the nation.[33]

Original Tappan Zee Bridge

Tappan Zee Bridge replacement

Another gap in I-87 existed in downstate New York, as the plan to build I-87 along the proposed Hudson River Expressway had been scrapped by 1962. Instead, I-87 was now proposed to begin in Port Chester and follow a new routing through Purchase, Armonk, and Katonah to Brewster, where it would join I-84.[28] The routing was modified slightly by 1968: I-87 still began in New York City, then overlapped with I-287 east to Purchase. From there, I-87 headed north along the now-open expressway to Armonk, where it ended at NY 22. Another portion of the highway, from Goldens Bridge (NY 138) to Brewster, was open as well while the part from Armonk to Katonah was under construction.[24] This segment, as well as the part from Katonah to Goldens Bridge, was completed by 1971.[29] On January 1, 1970, I-87 was rerouted between Elmsford and Newburgh to follow the mainline of the Thruway instead, leaving the Purchase–Brewster freeway to become I-684.[30]

The gap in the Northway between Pottersville and Keeseville was narrowed considerably by July 1967 with the completion of a 25-mile (40 km) segment from Pottersville to exit 30 at Underwood. It was closed further on July 25, 1967, with the opening of a 3-mile (4.8 km) stretch near Keeseville between exits 34 and 33.[25] The last section of the Northway to be built, a 30-mile (48 km) stretch between Underwood and Keeseville (exit 33), was finished on August 31, 1967.[26] The completion of the Northway linked New York City with Montreal by way of a direct, limited-access highway, with I-87 becoming A-15 at the Canadian border.[27] The total cost to build the Adirondack Northway was $208 million (equivalent to $1.47 billion in 2016).[15][26]

Filling the gaps

By July 1963, the Northway was completed from the Canadian border south to exit 34 at Parade Magazine. It became the second New York highway to win the award, as a stretch of NY 17 in Broome and Delaware counties was selected for the title in 1964.[23]


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