Proposed Route 9A Improvements Would Bring Dramatic Changes

OSSINING, NY — After years of complaints about safety issues, flooding, heavy traffic and poor air quality on Route 9A as it runs through Ossining and Mount Pleasant, New York State has released a draft study of ways to fix the problems.

They would require major changes to the road and its intersections with Routes 134, 133 and 100, Hawkes Avenue, Chappaqua Road, North State Road and Pleasantville Road, and would have a big impact on the homes and businesses that line the corridor.

The study examines the parkway from its intersection with Route 9, south, to the parkway's overlap with the Taconic State Parkway in the Town and Village of Ossining, Village of Briarcliff Manor and Town of Mount Pleasant.

The feasible concept for the main part of the road incorporates several improvements:

• Widening the mainline travel lanes in both directions, providing consistent shoulders, and installing typical “parkway” traversable curbs at the edge of widened shoulders.
• Replacing existing low-clearance bridges spanning the BPP to allow trucks to safely use the right lane.
• Reconstructing the pavement to provide a durable, long-lasting riding surface.
• Cleaning or replacing/resizing all roadside drainage features to provide optimized stormwater conveyance and management.
• Replacing the existing box beam median guiderail with a concrete median barrier.

Two concepts were developed for the intersections with Route 134, Hawkes Avenue and Stormytown Road, including new bridges and service roads:

Two concepts were developed for the intersections with Ryder Road and Route 133:

Two concepts were developed for Chappaqua Road, one with and one without access to Route 9A:

Two concepts were developed for North State Road, one with a bridge over Route 9A and one with a Route 9A bridge:

Two concepts were developed for the Route 100/Pleasantville Road intersections:

The study recommends a phasing plan:

Project Phase 1: Mainline BPP from just south of the Route 134/Croton Dam Road intersection to Route 133 including replacement of the low clearance bridge at Ryder Road, including Ryder Road and Route 133 Interchange improvements. Phase I’s estimated construction cost is between $45 to $75 million in 2024 dollars.

Project Phase 2: Mainline BPP from south of Route 133 to Route 100 including the Chappaqua Road and North/South State Street Intersections. While this location is the most complex, it will provide the most significant improvement to the corridor operations and connectivity of adjacent communities. Phase 2’s estimated construction cost is between $110 to $160 million in 2024 dollars.

Project Phase 3: Mainline BPP from Route 9 to south of Route 134 Croton Dam Road including the intersections at Stormytown Road and Hawkes Ave/Route 134/Croton Dam Road. This phase will replace the existing low clearance bridge at Hawkes. Phase 3’s estimated construction cost is between $90 to $120 million in 2024 dollars.

Project Phase 4: Mainline BPP from the Route 9A/Route 100 merge south to the Taconic State Parkway ramps including the Route 100/Pleasantville Road interchange. Phase 4’s estimated construction cost is between $95 to $120 million in 2024 dollars.

The feasible concepts recommended by the study may be advanced for further evaluation by future engineering projects.

See the study here: Briarcliff-Peekskill Parkway Engineering Scoping Report

The final meeting of the Transportation Partnering Committee meeting for the Briarcliff-Peekskill Parkway Engineering Scoping Report was held Thursday. Comments on the draft will be incorporated into the final report to be released in the spring.

SEE ALSO:

• State Allots $3 Million To Study Improvements To Route 9A
• Public Workshop On Route 9A Improvements
• NY Starts Engineering Study Of Route 9A In Briarcliff