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Past Projects
Pier 1, Staten Island – Substructure Rehabilitation
Trevcon commenced work on this project located in Staten Island, NY in October, 2008. This substructure rehabilitation and offshore extension project includes pile encasement, removal and replacement of missing braces, rehabilitation of pile caps and deck soffit patching. Wood platforms and other debris also had to be removed.
Brooklyn Army Terminal – Bulkhead Rehabilitation, Pier 1
Trevcon Construction Company began work at the Brooklyn Army Terminal, Brooklyn, NY in April, 2008. In preparation for the installation of an armor stone rip rap revetment slope, Trevcon began this project by clearing and excavating shoreline material which includes soil, submerged debris, and portions of Pier 1 remnants. Debris removal in and around the area of a partially submerged rail barge was also removed, as well as existing timber sheet pile bulkhead and remnants of the collapsed platform. The rip rap revetment slope will then be installed. The slope consists of 8,000 tons of armor stone and over 1,500 tons of bedding stone along 425 lineal feet of shoreline.
City of Hoboken, NJ – Sinatra Drive/Maxwell Place
The Maxwell Place North and West Piers and Waterfront Walkway Improvements Project for the City of Hoboken, NJ commenced construction in March, 2008. Trevcon is the marine and upland contractor working to rehabilitate the existing West Pier structures which involves encapsulating existing piles, driving sheet piles and structural deck work, value engineer/re-design and construct the new North Pier, and build the upland park on top of the West & North Piers. The project construction value is approximately $12 million and is scheduled for completion in March, 2009. Toll Brothers/PT Maxwell LLC are the construction managers and McLaren Engineering Group is the designer and engineer of record.
Sheepshead Bay Phase II Bulkhead Rehabilitation
The Sheepshead Bay project involves bulkhead restoration at both Shore Blvd. and Emmons Avenue locations in Brooklyn, NY. This project involves the demolition and removal of fender piles, installation of outfall extensions for pipe ranging from 3” to 60” in diameter, installation of soil anchors, sheetpiling, installation of permanent wale and electrical bonding. Additional work includes demolition and replacement of 80,000 square feet of the concrete sidewalk adjacent to the bulkhead. Removal and disposal of existing steel framework and grating surrounding outfalls and the construction of tie-in end conditions will also be done, in addition to installing precast pile cap and the rehabilitation wall of the large outfall.
Pier 25 and Platform Waterfront Structures
This project is located in the borough of Manhattan, NY on the Hudson River, north of Battery Park. The contract work area extends 400 feet along the Hudson River in a north-south direction and extends 1,000 feet into the Hudson River. The Pier 25 & Platform Waterfront Structures Contract consists of the sequenced removals and demolition of existing pier and bulkhead elements, and the construction of a new Pier 25, pile supported structure, of an area of approximately 3.5 acres. Bulkhead reconstruction will be done in several areas, along with the fabrication and installation of floating docks with gangways and ramps. Final completion is scheduled in October, 2008.
Verdant Power, LLC - East River Tidal Energy Project
Verdant Power, LLC called upon Trevcon Construction to install underwater turbines for the East River Tidal Energy Project. This innovative technology developed by Verdant Power uses tidal flow in a similar fashion as windmills utilize wind. The turbines, powered by the strong underwater currents of the East River, capture energy in the flow of water and convert it into electricity, forming a renewable, sustainable and economic source of power for many kinds of rivers, estuaries and other channels in the U.S. and around the world. This energy is presently being used as an emergency power backup to the Gristedes building located on Roosevelt Island. Trevcon’s work involves installing drilled-in monopiles and installation of six turbines which are mounted on the monopiles five feet above the riverbed in the East Channel of the East River. The total project may involve installation of up to 300 turbines. Construction management is provided by Oceaneering International, Inc. of Chesapeake, Virginia.
Governor’s Island – New York, NY
The Governor’s Island project is located in Manhattan, NY. The project involves both pier and dock work. Pier rehabilitation will be done to two existing piers. Yankee Pier work includes removal, repair and replacement of an existing fender system, spall repairs to the existing concrete deck and the restoration of electrical shore-tie power service and ship to shore sewer and water services at two berths. Pier 101 work includes sealing of concrete deck and installation of cathodic protection anodes on piles. Trevcon will also remove, repair and replace fender rack pile clusters and tighten and replace exiting bolts at Soisson’s Dock.
New York City Dept. of Environmental Protection— Tallman Island
This project is located at the sludge transfer pier at the Tallman Island Water Pollution Control Plant in Queens, NY. The work involves demolition and reconstruction of Piers 1 and 2. Pier 1 presents the challenge of having to demolish a pier located above two active plant outfalls without causing disturbance. The new replacement piers will be supported by steel pipes topped with precast pile caps, supporting precast soffit deck slabs and cast-in-place concrete deck toppings. Both piers will contain new 20” sludge transfer lines, electric service and new timber fencing systems.
New York City Passenger Ship Terminal - Pier Restoration and Repair - Ended December 2005
Trevcon's extensive marine construction experience and knowledge of the underwater environment has been put to use in the challenging substructure repairs to the New York City Passenger Ship Terminal. Varying amounts of damage caused by marine borers required the reinforcing, protecting or replacing of the substructure pilings. Trevcon's vast harbor experience allowed us to properly evaluate the condition of the pilings and choose the appropriate restoration type for each piling and damaged section of the pier.
NYC Economic Development Corp.— West Harlem Waterfront/Riverwalk
This $11,000,000 project involves both marine work as well as roadway and utility reconstruction along the Hudson River. The marine work consists of the installation of various pile-supported pier structures, floating structures, gangways and ramps, bulkhead reconstruction/rehabilitation and other shoreline modifications including gabion and rip rap slope features, bulkhead reconstruction and fish mitigation features. Various pier structures include an excursion pier, recreation and fishing pier, and the “Riverwalk” Pier. Floating structures include the ferry float and kayak float. Work c ommenced in March, 2006 and was completed in March, 2007.
NJ DEP/Wreck Pond
The project consists of installing an extension to an existing 84” diameter storm outfall between Spring Lake and Sea Girt, NJ to prevent future clogging of the pipe and allow for proper drainage. Trevcon will be installing 300 linear feet of 84” diameter concrete pipe on a timber pile foundation. The pipe is going through the surf and will require the building of a 400’ long temporary trestle to support our equipment during construction. Major items of work are: a 325’ X 50’ steel sheeted cofferdam, 450 timber piles, 7,000 bolts (installed underwater) 35,000 board feet of timber and a navigation structure.
Royal Caribbean Cruise Ship Terminal & Bayonne Old Military Terminal
New West Midtown Ferry Terminal at 38th Street in Manhattan
Barnegat Lighthouse
The change in current patterns have caused an erosion problem at Barnegat Inlet on Long Beach Island that has caused failures to the existing bulkhead just west of the Historic Barnegat Lighthouse. Trevcon was contracted by the NJDEP, Dept. of Coastal Engineering to install a steel sheetpile bulkhead outboard of the existing failed bulkhead using 60’ long sheets tied back to another sheetpile wall 50’ inshore. Six years ago Trevcon was contracted by the NJDEP to shore up the foundation of the lighthouse using 30,000 tons of jetty stone 12-15 tons in weight.
Brooklyn/Pier 12 – New US Port for Queen Mary II
Trevcon has been working continuously since September, 2001 upgrading the substructure at the Manhattan Cruise Terminal including structural enhancements to allow for the docking of the Queen Mary II. When Mayor Bloomberg partnered with Cunard Cruise Lines to upgrade and increase the cruise ship industry in New York City, Trevcon was called upon to upgrade the substructure and install large mooring structures at Pier 12 in Brooklyn. Our contract required the repair of existing timber piles, installation of 85 new 24” diameter X 120’ long steel piles, 1,500 cubic yards of structural concrete, interior water and sewer system, foundations for smaller buildings, fenders and bulkheads. The schedule was extremely tight in order to make way for QM II.
Bayonne Local Redevelopment — Berth N-1 Extension
This project consists of driving 191 18 ” diameter steel pipe piles ranging from 85 to 110 ft long. A new concrete platform extension to the existing pier will be constructed measuring 300 feet x 50 feet. The job also entails driving a new 386’ steel bulkhead and installation of three new bollards. Berth N-1 is scheduled to be completed by the summer of 2007.
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