Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor. Used alone or in combination, our techniques solve a wide range of challenges across the entire construction sector – from industrial, commercial and housing projects to infrastructure construction for dams, tunnels, transportation and water treatment, as well as projects to address environmental challenges. Global strength and local focus are what makes us unique. Our knowledge of local markets and ground conditions means we’re ideally placed to understand and respond to a particular local engineering challenge. Our global knowledge base then allows us to tap into a wealth of experience, and the brightest minds in the industry, to find the optimum solution. With around 10,000 employees and operations across five continents, we have the people, expertise, experience and financial stability to respond quickly, get the job done and see it through safely. By connecting global resources and local knowledge, we can tackle some of the largest and most demanding projects around the world but the everyday work we do is just as important and, in total, we tackle an unrivalled 6,000 projects every year.

Gray & Son was founded in 1908 with a name synonymous with quality in commercial and residential construction. Through the years, we’ve expanded our services, added to our fleet and welcomed new employees, but we’ve never stopped living up to our name. Today, Gray & Son is a leading contractor in the Baltimore metropolitan area for both private and public construction projects. We specialize in asphalt paving, land excavating, utilities, concrete, soil stabilization, sediment control/storm water management and commercial snow removal. Uniquely qualified to manage the entire construction project for our customers, Gray & Son has the resources to provide many types of construction site work and restoration projects, including residential subdivisions, commercial lots, roadways, schools, park construction, health-care facilities, churches, athletic fields, industrial sites, shopping centers and more. We put pride in everything we do at Gray & Son … from owning all of our fleet and reinvesting in our business, to ensuring that all of our employees and work sites are safe, to serving our customers and our community with unsurpassed service.

Roy Jorgensen Associates, Inc. is a privately owned company headquartered near Washington, D.C. with ongoing maintenance clients throughout the United States. For over 60 years, Jorgensen has provided a diverse range of facility and highway infrastructure, consulting, maintenance, and management services. As the first firm to specialize in facilities and highway assets maintenance, our firm has developed many of the maintenance contracting, management and organization practices in use today. Jorgensen is a national provider of maintenance services, employing engineers, technicians and multi-discipline professionals. Our firm has held significant operations and maintenance contracts worldwide.

P. Flanigan & Sons constructs and maintains infrastructure including roadways, airports, and railroads. Our team experience, project management expertise, environmental approach, and dedication to safety make us a top choice for area property and facility managers. We produce a wide range of asphalt and recycled aggregate products, manufacturing all types of Hot Mix Asphalt, Warm Mix Asphalt, Foamed Asphalt, and Cold Patch Asphalt. We also produce high quality crushed concrete for use as road bed including state approved graded aggregate base. Our locations are convenient to major highways and have onsite AASHTO approved quality control labs. We take pride in engineering high value road construction products at low cost and low environmental impact.

Concrete General, Inc. is a construction company based out of 8000 Beechcraft Avenue, Gaithersburg, Maryland, United States.

EYA was established in 1992 with the vision of building innovative urban neighborhoods to the highest standards. The company has made its name and reputation by creating high quality, lifestyle friendly, residential communities throughout the Washington Metropolitan Area. Consequently, no other homebuilder in the region has received more residential building and land planning awards. Over the past 30 years, EYA has delivered more than 7,000 new homes in Washington DC, Maryland and Northern Virgina. Its development team has tackled some of the most challenging sites in the region, from building on the banks of the Potomac River to revitalizing passed-over neighborhoods. Today, the combination of convenient locations and classic architectural detailing ensures EYA homes—both old and new—are always in demand. Like the communities we build, EYA homes are designed to stand the test of time. We are dedicated to meeting the needs of today's home-buyers; providing neighborhoods with a sense of place. A sense of pride. And a sense of excitement.

Headquartered near Harrisburg, PA, Liberty Excavators is recognized as one of the Mid-Atlantic’s most respected and reliable turnkey site contractors, based on a solid track record spanning over 40 years. Our experienced workforce and state-of-the-art equipment fleet provide us with both the experience and resources to professionally deliver a quality-finished product in the time frame our customers require.

American Contracting Group (ACG) is an American company based in Ohio that operates as an FMS specialist who provides contracting and construction services to the government (US & Allied Nations), while also serving businesses and individuals requiring construction services.

Susquehanna Valley Construction CORP is a construction company based out of 175 LAMONT ST , NEW CUMBERLAND, Pennsylvania, United States.

M.T. Laney Company, Inc. is a Maryland corporation specializing in asphalt paving, soil modification, and site development. We’ve been serving Central Maryland and Baltimore-Washington metro areas for over 40 years and are well known in the local communities for the high quality of our services, as well as our hands-on approach to project management. We use only the finest materials, equipment, and techniques when paving, which means your parking lot, road, or tennis court will perform as expected. Our goal is to get your project done on time and within budget with a high level of customer service. Our customers include real estate developers, general contractors, commercial property managers, state and local government agencies, as well as residential clients.

Baltimore, Maryland based Utility Contractor founded in 1920, specializing in underground infrastructure construction. HUBZone Certified Areas of Expertise: · Gas Mains · Communication Conduit Systems · Steam/Hot/Chilled water · Sanitary Sewers · Storm Drains · Electric Transmission and Distribution Systems · Tunnels, Auger Boring to 36”, HDD · Dewatering and Well Points · Utility Locating Services and Test Pitting · Cast in Place and Precast Manholes · Restoration and Streetscape Work