Overview

LiRo-Hill is providing construction inspection for the Bay Park Conveyance Design-Build project. To improve the water quality in the Western Bays, the project is removing a significant portion of the nitrogen load from a compromised area. The goal of the project is to accelerate rejuvenation of vital marshlands and grasses that protect communities from wave action and coastal surge. In addition to increasing the resiliency of areas along the Western Bays to coastal flooding, the local ecosystem will have a chance to regenerate, bringing back cleaner, healthier bays for wildlife, shellfish, fish, visitors, and residents alike.

About the Project

Treated water will be conveyed via the construction of a 2-mile-long tunnel from the Bay Park Sewage Treatment Plant in East Rockaway to an existing abandoned water main under Sunrise Highway in Rockville Centre. This is accomplished by utilizing a micro-tunneling process, where segments of concrete encased fiberglass reinforced pipe (FRP) are lowered into the shaft and the MTBM is mined to the next shaft. The mining goes under Mill River in several locations, the LIRR East Rockaway Station and numerous houses and buildings. There are eight 40-to-60 ft deep by 20-to-40 ft diameter shafts along the Bay Park alignment.

The aqueduct under Sunrise Highway is being rehabilitated and slip lined with an FRP pipe, between Merrick Road in Rockville Centre and Lakeview Road in Wantagh, utilizing 22 12×50 ft access pits that are in the eastbound lanes, for 7.3 miles. From there another 1.6-mile tunnel will be constructed to the existing Cedar Creek Treatment plant, in Seaford, where 5 new pumps are installed to send the treated effluent to the 3-mile outfall off Jones Beach.