JT Cleary

The Leader in Marine Construction

Marine Construction, Dredging and Deep Foundations

JT Cleary is a leader in turn-key marine construction services, delivering innovation with the highest level of quality and safety. From repairs to new installations, dredging, or deep foundations, the company mobilizes the best equipment, technology, and talent to make your project a success.

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In the News


Belt Pkwy Bridge Makes Top Photos List – PileBuck Jan 2017 (PDF)

Between the Spans – PileBuck Aug 2016 (PDF)

JT Cleary Installs Kingpile Bulkhead – PileBuck April 2016 (PDF)

Dredging up Business – Crain's New York Business March 2016 (PDF)

40 Marine Construction Companies Worth Talkin' About – PileBuck Dec 2015 (PDF)

Saugerties Harbor: Past and Present – Saugerties Times Oct 2015 (PDF)

JT Cleary Completes Complicated Channel Project – IDR Apr 2015 (PDF)

Dredging Basics – Boating on the Hudson Apr 2015 (PDF)

A Self-made Man and His Company – Boating on the Hudson Mar 2015 (PDF)

In the News


Consumer Alert: Email Fraud – Sep 2016 (PDF)

Paerdegat Boat Basin Rebuilt – Aug 2016 (PDF)

Nyack Marina Dredging Awarded – Jul 2016 (PDF)

Pier 6 Manhattan Heliport Awarded – Jul 2016 (PDF)

Fuel Offloading Wharf Completed – Jun 2016 (PDF)

New CFO Joins Team – Jan 2016 (PDF)

Saugerties Harbor Dredging Completed – Oct 2015 (PDF)

National Park Marina Rebuilt – Sep 2015 (PDF)

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JT Cleary is a multi-disciplinary marine construction contractor with expertise in a variety of marine structures, dredging, deep foundations, and diving. The company is unique in its wide range of services and turnkey operations.

Marine Construction Dredging Deep Foundations Diving

Marine Construction

All projects start with accurate, detailed estimating by an experienced JT Cleary team. Installation and maintenance of marine facilities requires engineering expertise, the latest technology and equipment, and safe execution. Once planning and performance are underway, your project manager will be visible on site, reachable, and responsive. Working in close communication with our clients from the beginning leads to long-term partnerships and successful outcomes.


  • Bulkheads
  • Coastal Resiliency
  • Cofferdams
  • Dams
  • Docks
  • Drilled Piles & Tiebacks
  • Fender Systems
  • Fixed Aids to Navigation
  • Offshore Platforms
  • Piers
  • Pile Jackets
  • Pipelines
  • Revetments
  • Shoreline Stabilization
  • Underpinning

Project Examples

US Coast Guard Station Waterfront Rehabilitation


Staten Island, NY

Foundations for Gerritsen Inlet Bridge


Brooklyn, NY

Dock Replacement at Paerdegat Basin

National Grid

Brooklyn, NY

Replacement of Fuel Oil Unloading Wharf

National Grid

Island Park, NY

Reconstruction of Great Kills Park Marina

Federal Highway Authority

Staten Island, NY

Far Rockaway WWTP Fender System


Rockaway, NY

Offshore Platform

National Grid

Northport, NY

69th Street Eco Dock

NYC Parks & Recreation

Brooklyn, NY

Battery Park Anchored Sheet Pile Bulkhead

US Coast Guard

Manhattan, NY

Mooring Dolphin in Hackensack River

Owens Corning

Kearny, NJ


An experienced dredge team analyzes all the project parameters to determine the optimum equipment for completing the work. This involves knowledge of how sediment characteristics impact equipment selection and material handling, including stabilization and final placement. Whenever possible, the company looks for opportunities for beneficial use of dredged material, which often can be a valuable asset as construction fill or for beach re-nourishment.


  • Maintenance
  • Deepening
  • Debris Removal
  • Clamshell Bucket
  • Environmental
  • Upland Placement
  • Beach or Offshore Placement
  • Sediment Dewatering
  • Sediment Stabilization

Project Examples

SW Brooklyn Marine Transfer Station Dredging


Brooklyn, NY

Saugerties Harbor on the Hudson River

US Army Corps of Engineers

Saugerties, NY

Sandy Hook Bay Channel

US Army Corps of Engineers

Leonardo, NJ

East River

Castle Terminal

Bronx, NY

Gerritsen Inlet


Brooklyn, NY

Access Channel at Eatons Neck Station

US Coast Guard

Northport, NY

Deep Foundations

A foundations project can have several potential approaches, so understanding the risk or benefit of each can mean the difference between timely results and delay, due to re-work or structure failure. JT Cleary understands the different risks and has experienced planners and engineers to manage them. A specialized team with expertise in underwater engineering inspection and the latest in deep foundation technologies will determine the best method for implementation, using only state-of-the-art equipment and the most advanced materials.


  • Drilled Shafts
  • Tie Backs
  • Mini Piles
  • Driven Piles
  • Cofferdam Construction

Project Examples

Foundations for Shore (Belt) Parkway Bridge


Brooklyn, NY

SW Brooklyn MTS King Pile Bulkhead


Brooklyn, NY

Fuller Brook Bank Stabilization

National Grid

Surrey, NH

Installation of Steel Sheet Pile Mooring Cells

National Grid

Port Jefferson, NY

Rockaway Boardwalk Construction

NYC Dept. of Design & Construction

Queens, NY

Utility Bridge

Phillips 66

Linden, NJ


The diving division at JT Cleary has background in some of the world’s most challenging marine environments. Its in-house dive crews have the skill and training to assess conditions and maintain the highest safety standards, implementing only the most conservative interpretation of commercial diving regulations. The dive teams inspect and perform underwater work for all types of marine infrastructure, including offshore energy platforms, offloading docks, and some of the largest bridge construction projects in the country.


  • Underwater Inspection
  • Pile Jacketing – Epoxy and Concrete
  • Pipeline Installation
  • Pipeline Maintenance
  • Offshore Platform Nodal Repairs
  • Intake Structure Maintenance

Project Examples

Offshore Platform Repairs

National Grid

Northport, NY

New Tappan Zee Bridge

New York State DOT

Tarrytown, NY

Oak Ridge Dam


Oak Ridge, NJ

Intake Structure Pipeline Repair

Coney Island Aquarium

Brooklyn, NY


Promoting a culture of safety means caring for the wellbeing of our workforce and reflects a commitment to employees, their families, customers, and the marine industry. Safety affects everyone.

Planning and Prevention

Each project begins with a hazard analysis prior to start of any work. All JT Cleary supervisors and project managers utilize the latest injury prevention methodologies to ensure a safe workplace. Having hands-on experience in the field, as well as engineering and equipment expertise, differentiates our managers, giving them greater ability to identify potential hazards.

Employee Involvement

Safety awareness requires good communication and interaction between our people in the field. JT Cleary stands by its culture of positive reinforcement by encouraging employees to contribute ideas for improvement on job sites. Feeling free to speak up creates an open and transparent dialogue.


Corporate safety policy complies fully with industry requirements and regulations. Management actively updates procedures and disseminates the latest advancements in safety practices. Ongoing safety training is a requirement for all employees on construction sites.

Operational Performance Measurement

To achieve continuous improvement, we can never be complacent about safety. JT Cleary has one of the best safety records in the region and is a member of the Council for Dredging and Marine Construction Safety, a nationwide group that regularly meets to share insights and methods to improve safe practices in the industry. We constantly strive to find better and safer ways to operate.


JT Cleary is a multi-disciplinary marine construction contractor with expertise in a variety of marine structures, dredging, deep foundations, and diving. The company is unique in its wide range of services and turnkey operations.

Leadership Company History Affiliations Clients


James Cleary, PE
President & CEO

Christopher Leykam, PE
Chief Operating Officer

Frank Mizerik
Chief Financial Officer

Carol Shobrook
President, Sales & Marketing

Mark Larsen
General Superintendent

Company History

JT Cleary was founded in 1995 to provide marine consulting services in the New York City metro area. The company quickly moved from consulting to contracting and developed into a leader in marine construction, deep foundations, and diving. Operations subsequently grew throughout the Mid-Atlantic and Northeast regions.

In 2005, JT Cleary expanded again, offering dredging services, including maintenance, navigation, and environmental dredging. The company has completed dredging projects for USACE, USCG, and numerous private clients.

JT Cleary’s focus on quality reflects the expertise of the staff and a corporate culture of innovation and collaboration. Through this approach, we work with clients to implement their vision in the execution of marine infrastructure projects.


  • American Sugar
  • Castle Oil Terminal
  • Castleton Commodities International
  • Chelsea Piers Management
  • ConEdison of New York
  • County of Westchester, NY
  • ExxonMobil
  • Federal Highway Administration
  • Global Terminal
  • Goldman Sachs
  • Holcim USA
  • Horizon Offshore
  • Hudson River Park Trust
  • IMTT-Bayonne
  • Lafarge Gypsum
  • National Grid
  • National Parks Service
  • NJ State Dept of Environmental Protection
  • NY State Dept of Environmental Conservation
  • NY State Dept of Parks & Recreation
  • NY State Dept of Transportation
  • NY State Thruway Authority
  • New York City Dept of Transportation
  • New York City Dept of Environmental Protection
  • New York City Bureau of Bridges
  • New York City Parks & Recreation
  • New York Power Authority
  • New York Water Taxi
  • Paradise Heating Oil
  • P&O Ports
  • Phillips 66
  • Port Authority of New York & New Jersey
  • Port of Coeymans
  • Toys R Us
  • Triborough Bridge and Tunnel Authority
  • Union Dry Dock and Repairs
  • United States Army Corps of Engineers
  • United States Coast Guard
  • United Nations School
  • The Water Club



Our employees know they are part of a team where they can contribute, learn new skills, and achieve their potential in a dynamic industry. A commitment to continuous improvement means using the best and latest technologies and ensuring that personnel receive ongoing training. The team stands out for its unique combination of engineering know-how and hands-on presence in the field. This sense of energy and purpose pervades everything we do.


Let the best ideas win. Challenge the status quo and make change. Rigid hierarchies and information silos hinder advancement, so we break down barriers to communication. As we grow and expand, both as a company and as individuals, we continually ask ourselves how we can collaborate better and promote effective knowledge sharing.


An open door policy and transparency make everyone feel like a partner, not just an employee. Shared challenges, goals, and successes bond us together as a team.

Current Opportunities

Chief Estimator

The Chief Estimator is responsible for managing the estimating department, as well as producing estimates for marine construction projects. Learn More (PDF)

Marine Construction Superintendent

The Marine Superintendent is the on-site, direct supervisor of construction field crews. The Superintendent is also responsible for equipment, logistics, report writing, and client liaison activities in connection with construction projects. Learn More (PDF)

Construction Project Manager

The Project Manager is responsible for the planning, construction implementation, safety and performance tracking of selected projects. Projects involve marine construction, deep foundations, and dredging. Learn More (PDF)


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100 Red Schoolhouse Road
Suite A-12
Chestnut Ridge, NY 10977
Tel: 845-352-1099
Fax: 845-352-1098