Mount Sinai Jetty Restoration

Project Location: Mount Sinai, NY
Client: Town of Brookhaven

N+P was retained by the Town of Brookhaven to prepare plans for the restoration of the East and West Jetty at the Mount Sinai Harbor inlet. The jetties were constructed during the late 1930’s to stabilize the mouth of the Mount Sinai Harbor which was being actively mined for gravel at that time. Since their construction, the jetties experienced significant collapse, leading to navigational hazards and shoaling of the inlet. In 2009 the Town retained the United States Army Corps of Engineers (USACE) to undertake a study of the jetties that recommended various alternatives to rehabilitate the jetties. N+P’s work began in 2016, expanding on the USACE report, ultimately recommending a full replacement of both jetties. In preparation of the design N+P performed topographic surveys of the jetties and retained firms to provide bathymetric surveys of the inlet, and to perform underwater inspections of the jetties. N+P’s design included full replacement of the jetties, raising their crest elevation, and repositioning the West jetty to match current shoreline conditions.

In addition to preparing plans for the jetty reconstruction, N+P also prepared plans for dredging of the inlet, beach nourishment using dredged sand, and reconstruction of the Cedar Beach Fishing Pier along side of the East Jetty.

NPV provided permitting services for all phases of the project. N+P provided bid phase and construction phase services, including full time construction inspection. The project was completed on time and on budget