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Possible intersection improvements RIDGEHILL $5 million settlement
Release Date: March 30, 2009

When it became clear to Greenburgh, Ardsley & Hastings officials that we could not legally stop the RidgeHill development from being approved by Yonkers we entered into an agreement with the city and Ridge Hill developers. Ridgehill would contribute $5 million towards road improvements. A committee made up of representativers of Greenburgh, Ardsley & Hastings has been meeting. This committee has been reviewing various traffic safety options.This is a summary of the committees most recent meeting, as reported by Thomas Madden, Commissioner of Planning.
PAUL FEINER
 
At the March 19, 2009, Ridgehill Intersection Improvement Committee, discussed and classified the twelve project study areas into three categories, in order better allocate resources when studying the intersections and road segments. These categories are 1) Intersections that would benefit from further study and have the most impact; 2) Intersections or improvements that should be sent to the State or County as a report and analysis for future road work considerations; and 3) No improvements needed until 2028.
 
Category A: Intersections that would benefit from further study
 
1)     Route 9A and Jackson Avenue
a)     Suggested improvements
It is proposed to add an exclusive left-turn lane to all approaches and to add an exclusive right-turn lane to the northbound approach, so that the southbound, eastbound, and westbound approaches would consist of a left turn lane and a through/right turn lane, and the northbound approach would consist of a left turn lane, a through lane, and a right turn lane. The traffic signal would also be improved.
 
2)     Jackson Avenue and South Sprain Road
a)     Suggested improvements
It is proposed to add an exclusive left turn lane to the northbound approach, and to add a right turn lane to the eastbound approach. So that the northbound approach would consist of two left turn lanes, and a right turn lane. The eastbound approach would consist of a right turn lane and a through lane, and the westbound approach would consist of a left turn lane and a through lane. The traffic signal would also be improved.
 
3)     Jackson Avenue and North Sprain Road
a)     Suggested improvements
The installation of a traffic signal along with a realignment of the intersection to a typical T-intersection will eliminate the delays at this intersection.
 
4)     Route 9A and Ashford Avenue
a)     Suggested improvements
It is proposed to add one additional through lane to each the southbound, westbound, and eastbound approaches, along with the required signal improvements to improve the operation of this intersection. This major improvement will require considerable study due in part to the fact that there is little available land for the improvements.
 
5)     Widening of Route 9A between Ashford Avenue and Heatherdell Road
a)     Suggested improvements
Study in conjunction with Route 9A and Ashford Avenue to widen the road and straighten horizontal and vertical curves.
 
Category B: Intersections or improvements that should be sent to the State or County as a report and analysis for future road work considerations.
 
1)     Jackson Avenue and Southbound Sprain Brook Parkway Ramps
a)     Suggested improvements
It is proposed to add an additional southbound exclusive left turn lane. The southbound double left with the required signal improvements will improve the operation of this intersection.
 
2)     Jackson Avenue and Northbound Sprain Brook Parkway Ramps
a)     Suggested improvements
Redistributing the available green time is proposed to improve the operations at this location.
 
3)     Sprain Road and Ardsley Road/Ashford Avenue
a)     Suggested improvements
The installation of a traffic signal along with a realignment of the intersection is recommended. It is proposed to add an eastbound left turn lane and a westbound left turn lane. The horizontal and vertical curves must be closely studied to determine how much the slope of Ardsley Road must be modified in order to allow for safe stopping during inclement weather, as this is anticipated to be the greatest issue with the addition of a traffic signal.
4)     "S" curve along Jackson Avenue between Sprain Road and the Park
a)     Suggested improvements
Look at widening the road to straighten horizontal and vertical curves.
 
5)     Ramp from Route 9A to the NYS Thruway
a)     Suggested improvements
Redesign to have two new ramps that would outlet unto 9a under current thruway bridge abutments in order to make this “urban” intersection.
 
Category C: No improvements needed until 2028
 
1)     Route 9A and Lawrence Street
a)     Suggested improvements
None
 
2)     Jackson Avenue and St. Andrews Way
a)     Suggested improvements
The installation of a traffic signal along with a realignment of the intersection to a typical T-intersection will eliminate the delays at this intersection.
 
 

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