Long Island Parkways: Drainage Enhancement

Project facts

Client / owner	NYS Department of Transportation
Location	Long Island, NY
Role	Prime consultant — construction inspection
Budget (as published)	$6.7M
Disciplines	Resident Engineering Inspection

Overview

Gedeon GRC Consulting was selected as a prime consultant to provide construction inspection services for a drainage enhancement project on the Meadowbrook and Wantagh parkways in the Town of Hempstead, Nassau County, NY. The project utilized a combination of day and nighttime construction.

Meadowbrook State Parkway (NY 908E) under Merrick Road

The work includes hydraulically separating the Meadowbrook State Parkway low point located under the Merrick Road Bridge — approximately 1,000 feet of roadway length — with steel sheeting, check valves, rerouting of drainage lines and installation of a pump station to drain the low point. Additional work includes installing tide gates to protect inland areas of Merrick and Freeport from coastal storm flooding and installing underground drains to dewater the permanently soggy grass shoulder. The profiles of the parkway, its ramps and Merrick Road may need to be raised to hydraulically isolate the low point.

Wantagh State Parkway (NY 908T) under Bay Parkway (NY 909E)

The work involves hydraulically separating the Wantagh State Parkway low point located under the Bay Parkway bridge — approximately 1,000 feet of roadway length — with check valves, rerouting of drainage lines and installation of a pump station to drain the low point. Additional work includes underground drains to dewater the permanently soggy grass shoulder and a coastline structure to protect outfall pipes repeatedly damaged by coastal storms.

Services applied

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