DN Tanks helps keep the world’s most precious resource safe by designing and constructing prestressed concrete liquid storage tanks. Our mission is to provide our clients around the world with the highest quality liquid storage at the best long-term value with an unrivalled customer experience. To do this, we form strong, collaborative relationships that ensure exceptional outcomes. The results are long-term performance, durability, reliability, minimal maintenance requirements, and lowest cost of ownership. With over 90 years of experience, and a deep commitment to helping clients meet the emerging needs of today and tomorrow, DN Tanks is Built for the Future. DN Tanks has 10 regional offices and 3 operations facilities located in Greater Boston, Dallas and San Diego areas.

SAFELY Building America’s Infrastructure Since 1972 Robert W. Pereira founded The Middlesex Corporation (TMC) in 1972. Through his vision, drive, and commitment to Safety, Quality, and Excellence, the organization, now encompassing various companies throughout the United States, is a leader in the heavy civil construction and paving industries. In 2018, The Middlesex Corporation was ranked by ENR as the 211th largest contractor in the country. The Middlesex Corporation is headquartered in Littleton, Massachusetts with regional offices in West Haven, Connecticut and Orlando, Florida. The sustained success is a result of the Leadership and Team Members living the core values of Safety first in everything we do, Quality in all we offer, Integrity in the way we act and do business, Professionalism in how we represent ourselves and the company, Strong Work Ethic that produces positive results, and Commitment to the Success of all Team Members and Stakeholders. Our Goal is to sustain our exemplary Safety record while growing into a diversified “Top 100 ENR Company” and being recognized as “One of the Best Places to Work”.

SPS New England, Inc. provides heavy construction, bridge repair and maintenance services, and design-build services to municipal and state clients throughout New England. As a leading contractor, SPS New England brings more than 25 years of experience and a reputation of excellence to the industry. A combination of management expertise, a high quality workforce and workmanship, a philosophy of safety first, and delivery of projects on time and on budget are what sets SPS apart from industry peers. SPS New England's Heavy Highway Division is responsible for some of the most prominent and complex projects in the region, including the rehabilitation of the Fall River Government Center over I-195, the Commerce Way Interchange in Woburn, Massachusetts, the I-495 Interchange in Lawrence, Massachusetts, and the Route 128 Canton, Dedham, Westwood, Massachusetts Interchange. The Company's Design-Build Division embraces the initiative to find better, faster and smarter ways to build projects. SPS recently completed several historic and time-sensitive accelerated bridge projects in Massachusetts with an "every day counts"​ philosophy:"​ the Pleasant Street Bridge Project in Grafton and the first-ever heavy lift bridge project on Rt. 2 in Phillipston. SPS New England's core values insist on a relentless pursuit of customer satisfaction, maintaining business integrity, hiring talented people, being committed to our employees, and giving back to the community.

Continental Paving is a machinery company based out of 1334 Hooksett Rd, Hooksett, New Hampshire, United States.

Founded in 1987, NEL Corporation is a Massachusetts based General Contractor specializing in bridge, site, marine, concrete and facilities construction. Our emphasis is on the rehabilitation and maintenance of existing structures. We have a solid reputation for quality work, safe working conditions and professional management and we honor our commitment to quality workmanship.

McCourt Construction is a large, diversified General Contractor headquartered in Boston, MA. Since our founding in 1893, we have focused on building the Northeast’s most complex civil projects. The company is organized into a Heavy Civil Division focused on improving our nation’s infrastructure and an Energy Division dedicated to expanding America’s electric, gas, and steam networks. Fifth-generation McCourt brothers lead McCourt Construction, and with over 130 years of managing construction projects, we have built a book of business unmatched in the Northeast. We pride ourselves on working for New England’s most demanding clients, ranging from the Federal Government to state transportation agencies, gas & electric utilities, and the world’s most elite universities and hospitals. Dedicated to building the Northeast, our team comprises hundreds of skilled craft employees backed by 90 salaried staff. Among them are committed and talented construction professionals, engineers, surveyors, and our in-house Safety Department. Our fleet of equipment, valued at tens of millions of dollars and comprised of fully-owned machinery, is diligently maintained by our mechanics stationed at our Boston maintenance facility. We are excited to continue to develop our workforce and build on our expertise to uphold our reputation as New England’s premier heavy civil contractor.

Severino Trucking is a construction company based out of 512 Raymond Rd, Candia, New Hampshire, United States.

Mirra Co. is a leading utility construction contractor providing telecom, fiber, natural gas, and civil electric services. Established in 1953 by its founder Norino Mirra Sr., an immigrant from Italy, with nothing of value other than his work ethic, pride, and the underlying principle that everyone, employees, and clients, deserve to be treated with dignity and respect. The success of this family business for over 65 years is directly attributable to our valued employees, who work every day in a safe and professional manner to deliver the highest quality to all our clients. Each individual contributes something special to this company, their coworkers, working in a culture where being part of an extended family can foster their growth and lead to advancement. The commitment to safety is the highest priority for every employee and is engrained deeply within our culture every single day. We appreciate the strong, longstanding, relationships with our client partners. We believe that success is through delivering the highest level of service on every job, every day. The contributions of each individual combines to something bigger than we could ever accomplish on our own.

TREVIICOS Corporation was founded in 1997 when the Italian TREVI group acquired Boston- based ground engineering firm ICOS, to combine the worldwide experience of TREVI with ICOS' knowledge of the North American market. TREVIICOS is a full- service ground engineering company able to provide innovative applications and a broad range of techniques such as slurry walls, cut-off walls, secant piles, caissons, jet grouting, deep & shallow mixing, and ground improvement. We particularly pride ourselves in our Dam and Levee rehabilitation work throughout the United States with the US Army Corp of Engineers, foundation works for tunnels, and building the foundations of the ever changing Boston skyline. We are committed to quality, safety, and timely project delivery for our clients. Our North American headquarters are in Charlestown, Massachusetts.

A construction and general contracting company with a focus on roads, bridges, utilities, and large site work throughout New Hampshire and northern New England.

Established over 50 years ago, the Toupin Rigging Company has become the industry's premier leader in the rigging, relocation, set up and transportation of machinery used in all industries. We are a family owned and operated business with three generations of experience. Our services include machinery installation and moving, rigging, millwright service, crane service, industrial warehousing, packaging and crating, heavy haul and air ride transportation, dismantling and demolition, metal fabrication, welding and structural modification.