Highway Design, NYS Route 454, Drainage Improvements

This project provides for the Detailed Design (Phases V-VI) of PIN 0030.15, NYS Route 454, Drainage Improvements from Johnson Avenue to Broadway Avenue. The purpose of this project is to install positive drainage systems with new recharge basins between Johnson Avenue and Broadway Avenue to address the ponding and pavement flooding that prevail in the area during rainfall events. The drainage needs and proposed drainage layout identified in the project’s Design Approval Document (DAD) were reviewed and reevaluated using Bentley Inroads Storm and Sanitary V8i software. The drainage evaluation process includes the complicated task of incorporating portions of the existing drainage/leaching system into the proposed drainage system wherever feasible to meet the client’s budgetary needs. Also included with the project’s proposed improvements is the installation of continuous curbs, ADA compliant sidewalks and pedestrian ramps, reconstruction of roadway shoulders and driveways in areas requiring excavation for the installation of positive drainage structures and pipes, and repair/replacement of guiderail that is either damaged, beyond its service life or does not meet current AASHTO standards.

Services Provided

Civil / Transportation Engineering


Suffolk County, NY


New York State Department of Transportation



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