Contractors in Pennsylvania

QES takes pride in expressing each value in our name: Quality Engineering Solutions. We provide solutions to challenges in the pavement and transportation field using the latest proven engineering technology, with a strong emphasis on the quality and timeliness of our work. QES has nationwide experience, a wealth of knowledge, and the equipment necessary to satisfy all your pavement engineering and construction inspection needs.

Quality Bridge & Fab, Inc. manufactures steel bridge structures, bridge railings, expansion joints, scuppers, miscellaneous guide rail components, sound wall components, and sign posts for the highway industry. They also have capabilities for manufacturing components for the non-highway industry, custom-made to clients' specifications. The company emphasizes exceptional customer service, high-quality products, and on-time delivery, sourcing steel from the U.S.A.

Quality Work Company does all kinds of installations and remodeling in Drywall on straight, curved ceilings and walls, etc. in Departments, Offices, Commercial premises, etc.

Quarry View Building Group specializes in high-end timber framing, passive home building, and custom commercial, residential, and equestrian projects. They offer preconstruction, construction management, general contracting, and design-build services.

Quinn Construction was founded in 1991 with the goal of providing the highest level of project management and skilled craftsmanship to the restoration and rehabilitation of concrete and masonry structures.

R.T. Patterson Company (RTP) is an industrial engineering firm with nearly 70 years of experience delivering innovative engineering solutions to clients across various sectors. They offer expertise in electrical, civil, mechanical, piping, automation, and HVAC engineering.

Relationship focused, detail oriented; working to bring visions to life.

RAVAN AIR is a probe, camera, and drone service provider for the oil and natural gas, landfill, utility, and construction industries. They specialize in underground distribution and transmission pipeline mapping and cameras for underground imaging and inspection. They also offer UAV services including GIS mapping, oil and gas leak detection, thermal imaging, aerial and above ground inspections and UAV for emergency management.

RETTEW is a trusted engineering consultant offering innovative solutions in site development, environmental engineering, & infrastructure projects. They deliver professional engineering consulting services and implement effective strategies for public or private projects across various sectors, including power and utilities, oil and gas, transportation, commercial development, water, and government. RETTEW is dedicated to investing in people, producing better solutions, and collaborating with their clients to achieve their goals. They are a 100% employee-owned company and consistently ranked as a Top 500 Design Firm.

RJ Lee Group is an industrial forensics analytical laboratory and scientific consulting firm. They partner with clients to deal with problems encountered during the manufacturing process, ensure regulatory compliance, and uncover and understand the root cause of product failure.

RJR Safety Inc. partners with companies to enhance safety practices, prevent workplace injuries, and promote a culture of safety within organizations. The company focuses on developing safe work environments and procedures while providing safety training to improve worker productivity and preserve resources.

RMS Environmental (RMS) offers a broad range of geologic and environmental services that include permitting, underground storage tank (UST) work, due diligence (Phase I & II ESA's), site assessment and remediation for multiple media, water supply and groundwater resource management services, compliance monitoring.

RPG Resources is an environmental consulting firm committed to partnering with a diverse range of clients to ensure environmental and regulatory compliance while driving efficiencies and cost savings. Acquired by System One in January 2023.

RS Asphalt Maintenance has been providing professional and affordable driveway and parking lot maintenance since 1977, specializing in commercial and residential work, and focusing on high-quality asphalt preservation.

Commercial and Industrial electrical contractor servicing the mid-atlantic region with a focus in Southern Pennsylvania and Baltimore markets. They offer electrical repair, generator and equipment install, design build, and LED lighting.

Providing expert electrical design, engineering, and installation services since 1930, ensuring safe, reliable, and efficient systems tailored to meet the unique needs of every project.

RTR Energy Solutions is a leading provider of innovative and reliable services for utility infrastructure projects, specializing in project oversight, outage and constructability assessments, drone and survey technology, and environmental services.

RWS Recycling & Waste Solutions provides North America’s largest companies with comprehensive waste and recycling services that improve cost management, save time, and help better the overall environment. They offer customized waste service programs and real-time data for decision-making.

RZ Contracting is a second-generation, full-service site development and site improvement company, serving commercial building owners and property managers throughout the greater Philadelphia area. They specialize in commercial asphalt paving services, concrete work, excavation, and demolition. They also offer ongoing property maintenance services for sidewalks, curbs, and parking lots.

Raimondo Construction has been delivering quality industrial, commercial and retail building solutions in Western Pennsylvania for over 100 years. Their core competencies are building, interior remodeling, pre-engineered, and industrial and specialized concrete.

Rampart Hydro Services restores America’s infrastructure for a safe and sustainable future by providing hydrodemolition and hydrocleaning services. They use ultra-high pressure waterjets to remove deteriorated concrete from structures like bridges, garages, dams, power plants, and water treatment facilities. They serve leading contractors and public & private organizations throughout the U.S and Canada.

Ramsey Construction is an earthwork/utilities contractor specializing in commercial building projects in the Pittsburgh, PA area. Established in 1985.