Find engineering consulting firms by capability and location.

2IM Group, LLC is a Chicago-based civil, environmental, and transportation engineering practice. Now part of MacKay, it continues to deliver technical solutions across highways, roads, streets, aviation, rail, transit, utilities, and stormwater management systems while offering expanded resources and broader geographic reach.

Project: O'Hare Terminal 3, Concourse L Expansion

Experts in Nuclear Operations and Waste Management Solutions

Service detail: Engineering and Project Management

Air. Land. Water.

Service detail: Air Quality and Environmental Compliance

Providing Quality Services for Over 30 Years

Project: Cumberland Levee Repair at Lake Texoma

See it. Solve it. Stand by it.

Service detail: Civil Engineering

Celebrating 70 Years of Engineering and Design

Project: Route 1 Improvements

Providing Engineering Solutions for Sustainable Infrastructure

Project: Lummus Park Waterfront Redevelopment

Mission-Driven.

Project: Naval Air Station North Island Soil Investigation

Designing America's Energy Lifelines

Service detail: Chemical and Process Design

Professional problem-solvers achieving clients' goals and advocating their success

Project: Boer Dairy Expansion

Your Partner for Professional Engineering Consulting

Project: WSLP-105 and WSLP-108 Drainage Structures, Levees and Floodwalls

Practical Solutions. Designed to Last.

Service detail: Civil Engineering

Experts in Environmental Services

Service detail: Environmental Engineering Consulting

Precise. Responsive. Solutions.

Project: Annapolis Landfill Solar

California's Only One Stop Shop

Service detail: Planning and Permitting

Sustainable Engineering Solutions. Simplified.

Service detail: Water Engineering

Integrated Engineering, Environmental, and IT Solutions for Efficiency, Safety, and Sustainability

Project: Redstone Arsenal Facility Audits & Energy Systems

You See Us Every Day

Project: Braddocks Mill Dam

Advantus Engineers is a Pittsburgh-based engineering consulting practice founded in 2004, specializing in building commissioning, sustainability consulting, MEP assessments, construction quality assurance, and environmental compliance. It serves public, institutional, and commercial clients across the Pittsburgh region. Over more than two decades, the practice has supported LEED certifications, water quality programs, and on-call MEP engineering for clients including the Pittsburgh Water and Sewer Authority and the David L. Lawrence Convention Center.

Project: Western Butler County Authority Administration Building

Over 50 years of engineering excellence

Project: Berkeley Township SA Bayview Avenue Force Main Replacement

Innovative Water Resource Engineering

Project: Municipal Sequential Batch Reactor Wastewater Treatment Process

All County and Associates, Inc. (ACA) is a full-service civil engineering, land surveying, and environmental permitting firm established in 1992 and located in Gilbertsville, Pennsylvania. ACA serves clients across fifteen counties in eastern Pennsylvania, covering Berks, Bucks, Carbon, Chester, Delaware, Lackawanna, Lancaster, Lehigh, Luzerne, Montgomery, Monroe, Northampton, Pike, Schuylkill, and southern Wayne counties. The practice serves architects, builders, contractors, developers, homeowners, home inspectors, and real estate agents with a focus on helping clients navigate permitting and regulatory processes.

Service detail: Civil Engineering

Partnering to Build & Protect What Matters Most

Project: ADOT I-10 Tucson Reconstruction

Alta Southwest is a multi-discipline engineering and environmental consulting firm with offices in Tempe, Tucson, Florence, and Sierra Vista, Arizona. Alta Southwest provides environmental services, land surveying, geotechnical engineering, construction materials testing, and civil engineering to residential, commercial, government, institutional, and industrial clients throughout the Southwest.

Service detail: Environmental Services