New York State Route 9A

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NY Route 9A
West Side Highway
Henry Hudson Parkway
Briarcliff Peekskill Parkway
Length: 47.25 mi[1] (76.04 km)
South end: I-478 in Manhattan
Major
junctions:		 I-78 in Manhattan
NY 495 in Manhattan
Henry Hudson in Manhattan and Bronx
I-95/US 1/US 9 in Manhattan
US 9 from Bronx to Yonkers
Saw Mill in Yonkers
I-87/NYS Thruway in Ardsley
I-287 in Elmsford
Saw Mill in Hawthorne
US 9 in Ossining
US 9 in Croton-on-Hudson
North end: US 9 in Peekskill
Counties: New York, Bronx, Westchester
New York State Routes
< US 9 NY 9B >

New York State Route 9A is a state highway in New York, United States, providing an alternate to U.S. Route 9 from New York City north to Peekskill. In New York City, it is a major route of its own, running along the West Side Highway and Henry Hudson Parkway.

Contents

[edit] Route description

Route 9A begins in lower Manhattan at the north end of the Brooklyn-Battery Tunnel (Interstate 478) and heads north on the surface West Side Highway and freeway-standard Henry Hudson Parkway, crossing US 9 for the first time at the east end of the George Washington Bridge. After crossing into the Bronx via the Henry Hudson Bridge, 9A proceeds to leave the parkway at exit 23, joining US 9 on Broadway. The 9/9A concurrency runs for 2.85 miles within the city of Yonkers.

9A separates from US 9 along Ashburton Avenue then heads north as Saw Mill River Road. 9A parallels the Saw Mill River Parkway through Ardsley and Elmsford, to the west side of Hawthorne. 9A junctions with the southbound New York State Thruway I-87, then later to a full junction with I-287 (Cross Westchester Expressway) providing a route to the Northbound Thruway I-87. New York State Route 100 merges with 9A to form a 3.11 mile NY-100/NY-9A multiplex carrying the names Saw Mill River Road and Peekskill-Briarcliff Parkway, parallel to the Taconic State Parkway. NY-9A exits off this highway along the Peekskill-Briarcliff Parkway, while NY-100 continues straight as Saw Mill River Road. 9A merges to form a multiplex with US 9 as the Croton Expressway in Ossining just south of the Croton River.

The 9A/US 9 multiplex runs for 0.65 miles, with 9A leaving the Croton Expressway at Croton Point Avenue. Nine-A heads north along Riverside Avenue and eventually joins old Albany Post Road. After crossing US 9 once in Cortlandt, Route 9A ends at the Welcher Avenue interchange in southern Peekskill.

[edit] Communities along the route

[edit] Major intersections

County Location Mile Road(s) Notes
New York New York City 0.0 I-478
FDR Drive		 Northern terminus of I-478.
Southern terminus of FDR Drive.
1.3 I-78 Holland Tunnel.
Eastern terminus of I-78.
Access via Canal Street.
3.7 NY 495 Lincoln Tunnel.
Eastern terminus of NY 495.
Access via 30th Street.
5.3 Henry Hudson
Henry Hudson Pkwy.		 Southern terminus of duplex.
10.2 I-95
US 1
US 9		 George Washington Bridge.
Bronx New York City 15.3 Henry Hudson
Henry Hudson Pkwy.		 Exit 23 (HHP).
Northern terminus of duplex.
15.3 US 9 Southern terminus of duplex.
Westchester Yonkers 18.2 US 9 Northern terminus of duplex.
20.3 Saw Mill  
Ardsley 24.2 I-87/Thruway Exit 7 (I-87/Thruway).
Greenburgh 25.6 NY 100B Western terminus of NY 100B.
Elmsford 28.1 NY 119  
28.4 I-287 Exit 2 (I-287).
Greenburgh/Mount Pleasant line 29.7 NY 100C Western terminus of NY 100C.
Mount Pleasant 31.1 Saw Mill Northbound access only.
32.2 NY 141 Western terminus of NY 141.
32.4 NY 100 Hamlet of Hawthorne. Southern terminus of duplex.
33.5 NY 117  
Briarcliff Manor/Mount Pleasant line 35.5 NY 100 Northern terminus of duplex.
Ossining 37.0 NY 133  
Ossining 38.4 NY 134  
39.9 US 9 Southern terminus of duplex.
Croton-on-Hudson 40.6 US 9 Northern terminus of duplex.
Cortlandt 44.2 US 9  
Peekskill 47.3 US 9  
Legend
Crossing, no access Concurrency termini Decommissioned Unconstructed Closed

[edit] History

Prior to the 1927 U.S. Highway System, US 9, at least near New York City, was Route 6. An alternate route from Yonkers to Tarrytown was assigned the number Route 6A. This ran along the present alignment of Route 9A from Yonkers to north of Elmsford, where it turned west on Saw Mill Road, Neperan Road, County House Road and Bedford Road to end at Route 6 in Tarrytown.

At some point, probably in the 1930 renumbering, Route 6A was renumbered to Route 9A. It was extended south to the Holland Tunnel in New York City in mid-December 1934, along with the marking of other numbered routes in New York City. The 1933 plan, compiled by the New York Automobile Club, had taken US 9 to the tunnel (in 1932 it would have continued south via the Staten Island Ferry), but the final plan took US 9 over the George Washington Bridge into New Jersey, with Route 9A taking over what was to be US 9.

The 1932 plan took Route 9A south through the Bronx and into Manhattan on Broadway (US 9 would have used Riverdale Avenue north of 230th Street, resulting in a short concurrency across Spuyten Duyvil Creek). It would have split to the south on Tenth Avenue at 218th Street in order to join the Harlem River Drive via Nagle Avenue and Dyckman Street. From there it would head west on 155th Street to Amsterdam Avenue, where it would head south to 79th Street, heading west there to rejoin US 9 at Riverside Drive. (It is unclear whether Route 9A would have continued south with US 9 to lower Manhattan.) The 1933 plan made no changes to Route 9A, though US 9 was changed to use Broadway all the way through the Bronx.

In the final plan, however, no route was assigned to the Harlem River Drive-Amsterdam Avenue corridor. Instead, Route 9A used what had been planned as US 9, splitting at Broadway and Dyckman Street. Route 9A ran south along the west side of Manhattan on Riverside Drive and the West Side Highway (detouring around an unfinished section via 57th Street, Eleventh Avenue and 48th Street) to end at the entrance and exit plazas of the Holland Tunnel.

As the Henry Hudson Parkway replaced Riverside Drive in the 1930s, Route 9A was moved onto it, eventually using the new parkway to the crossing with US 9 (Broadway) in the Bronx, where it continued to exit and run concurrent with US 9 to the split in Yonkers. At the other end, an extension of Saw Mill River Road and the Briarcliff-Peekskill Parkway ran around Ossining to US 9 north of that village. Completed in 1933, it was initially designated as Route 404, and became a realignment and extension of Route 9A between 1941 and 1952. An extension prior to 1941 had taken it north from Peekskill on Sleepy Hollow Road, rejoining US 9 between Tarrytown and Ossining.

A short extension on the south end happened after 1960, when Route 9A took over former Route 27A from the Holland Tunnel south to the Brooklyn-Battery Tunnel. To the north, the designation was extended at some point to Peekskill along the pre-Croton Expressway (opened in 1967) US 9, running concurrent with US 9 for a short distance to Croton-on-Hudson before splitting.

[edit] See also

[edit] References

  1. ^ New York Routes - New York State Route 9A

[edit] External link


v • d • e
Westchester County Parkways
North-South Parkways: Bronx River, Hutchinson River, Sprain Brook, Taconic State, Briarcliff-Peekskill, Saw Mill River, Central Westchester
East-West Parkways: Bear Mt. State, Playland, Cross-County
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