Founded in 1914 and now in its fourth generation of family ownership and management, the Barletta companies'​ headquarters is in Canton, Massachusetts. Its two construction entities perform different categories of work. Barletta Engineering Corporation constructs water and sewage treatment facilities, gas-fired and renewable energy power plants, green roofs and spaces, and commercial buildings. Barletta Heavy Division, Inc. is focused on work such as airports, roads, highways, bridges and tunnels, public transportation projects, railroad and light rail tracks, landscaping, environmental remediation, sitework and utilities. Barletta companies have a professional staff of 90, and are signatory to Labor Agreements with the Unions representing Laborers, Carpenters and Operating Engineers. Barletta companies have a fleet of over 300 pieces of equipment, and are prequalified by the Massachusetts Highway Department, Department of Conservation and Recreation, the Division of Capital Asset Management, and the Massachusetts Bay Transportation Authority. There are few firms in today's construction industry with the level of experience and longevity that the Barletta companies enjoy. By combining strong project management with the latest technological advances and cutting edge construction methods, the Barletta companies have established a reputation for safely completing projects to specification while meeting time and budget constraints.

Gemma Power Systems, a wholly owned subsidiary of Argan Inc. (NYSE: AGX), is a leading Engineering, Procurement and Construction (EPC) company providing innovative solutions for the power and renewable energy industry. Our wide-ranging and comprehensive experience comprises 14,500 MW installed capacity including combined cycle and simple cycle gas turbine plants, biomass projects, solar facilities, wind farms, biofuel plants and environmental facilities. Gemma Power Systems also provides operations and maintenance services for your completed facility. "Built by Gemma"​ is our commitment that our customers, the communities and all stakeholders will have a great project experience. Gemma Renewable Power (GRP) specializes in the construction of utility scale wind and solar projects. Since its inception, GRP has successfully completed power projects reaching from Massachusetts to Washington State. Additional information about Gemma Power systems can be found at www.gemmapower.com

Complex building systems demand technically advanced solutions. As the holding company for Arden Engineering Constructors, MJ Daly, Unique Metal Works, and Corporate Mechanical of New England, Arden Building Companies provide a robust skill set that covers a wide range of services including: engineering design, mechanical construction and maintenance services, electrical construction, sheet metal fabrication, sprinkler construction and service, and co-generation “green” energy. Our resources run deep and our ability to listen to our customers and create financially and energy efficient solutions keep us the one-stop provider of mechanical building solutions in New England.

The O’Connor Corporation is committed to building long-term relationships with our clients based on performance, integrity, safety, and customer satisfaction. We continue to meet the evolving needs within our industry by employing the most qualified and dedicated project managers, professional millwrights, and boilermakers. Our highly trained team continuously strives to meet or exceed our customers’ expectations. The O'Connor Corporation services the following industries: Power Generation Maintenance and Construction, Water and Wastewater, Moveable Bridges, Material Handling, Pulp & Paper, and Precision Mechanical Alignments.

We are one of the State’s leading firms for the advancement and construction of highways, roads, bridges, landfills, site development and environmental projects. We have also undertaken a variety of “specialty” projects over the years, from airports to bridges on private islands. Road Work: We’re often responsible for building these highways that unite the communities within our State and region.

RJV Construction Corporation is an underground utility contractor located in Canton, MA specializing in water and sewer improvements. The name in bold red print on their equipment, PACELLA, has been associated with pipework in and around Boston since the 1920s. Founded on the family core values of honesty, integrity, hard work and determination; RJV utilizes their experience and resources to deliver a quality product that is on time and within budget on all projects. They take pride in the PACELLA name and their deep history in the utility industry around the greater Boston area.

New England Infrastructure, Inc. has a long and proud history as a leader in the New England construction industry. We are a multi-disciplined heavy/civil contractor specializing in providing engineered solutions to complex projects of all sizes. Our expert team of qualified management and skilled craftsmen are present at every job site, ensuring that all work is done on time, on budget, to specification, and up to par with each client’s expectations. Throughout NEI’s life, our mission has always been the same – to adhere to the best interests of each client – and this has consistently proven to be within our long-term interests as well. We have found success by taking on increasingly demanding projects, and have fine-tuned our capabilities in the process. We meticulously plan and engineer every project we undertake, and our stellar record of safety, quality of work, and on-time schedule are directly proportionate to this careful planning. We aim to provide a working environment where all parties share equally in the success of the project, as we believe teamwork to be the foundation of any successful business. Our experienced team works together from project start to completion, and this collaboration is just one of the many ways we set ourselves apart from our competitors in the industry. From bridges and dams to parks, site work, and foundations, New England Infrastructure is the contractor to trust with your construction needs.

COLOSSALE CONCRETE, INC. is a construction company based out of 510 CHRISTIAN LANE, BERLIN, Connecticut, United States.

R. ZOPPO CORP is a 90 year old, family owned, public works contractor established in 1925 with an extensive New England construction history. Specializing in the heavy/civil and underground utility sectors of the Massachusetts construction industry, R. ZOPPO CORP has made numerous notable contributions to New England's infrastructure.

John Rocchio Corporation based in Smithfield, Rhode Island provides heavy civil contracting services throughout the New England region. The company was founded in 1960 and is now in its third generation of leadership. John Rocchio Corporation is a performance driven, diverse heavy civil contracting company. We provide a full range of civil contracting services that include bridge, culvert, dam, utility and road construction. With our long history of successful projects, our work today can be seen throughout all of Southern New England.

JAMES G GRANT CO INC is a company based out of P O BOX 54, READVILLE, Massachusetts, United States.