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

Your Trusted Engineering Partner

Service detail: Land Development

Best Engineering Solutions to Build Your Dreams

Project: DFW Airport Southwest End Around Taxiway - Drainage Design

Colorado Civil, Structural, & Land Surveying Experts

Project: Love's Travel Stop & RV Park Designs

Air. Land. Water.

Service detail: Air Quality and Environmental Compliance

Engineering Excellence for a Sustainable Future

Service detail: Systems Engineering & Integration

Harmonizing the built environment with the natural.

Service detail: Land Development

Distinguished Transportation & Site Engineering

Service detail: Traffic Engineering

Moving Our Communities Infrastructure Forward

Project: Gateway Park

A&R Engineering is a civil engineering firm specializing in traffic and transportation engineering, headquartered in Marietta, Georgia. A&R has served clients across Georgia, South Carolina, and Alabama for over 20 years, guiding projects from due diligence through construction completion. The team works with developers, architects, attorneys, and public agencies on retail, residential, industrial, mixed-use, educational, and medical developments, delivering traffic impact studies, intersection and signal design, permitting support, construction oversight, and expert witness services.

Service detail: Traffic Studies

Celebrating 70 Years of Engineering and Design

Project: Route 1 Improvements

Applying the Latest Technology

Service detail: Civil Engineering

Providing Engineering Solutions for Sustainable Infrastructure

Project: Lummus Park Waterfront Redevelopment

Full service planning and design.

Project: Pacific Industries Manufacturing Facility

Multidisciplinary engineering and support services in the Baltimore-Washington area

Project: WMATA Bus System Renovations

Engineering with Soul

Project: Historic Orange Mound Neighborhood Infrastructure

Civil & Structural Engineering, Design Services, General Contracting, and Construction Management

Project: Washington Avenue Streetscape Project

Engineering for an Integrated World

Project: Denver Central Business District - Traffic Signal Retiming

AECOM is a trusted global infrastructure firm delivering professional services spanning cities, transportation, buildings, water, new energy, and the environment. Founded in 1990, with predecessor firms dating back over 120 years, AECOM is ranked #1 in general building, transportation, and water by Engineering News-Record (2025), listed at #259 on the Fortune 500, and generated $16.1 billion of revenue in fiscal year 2024. AECOM delivers planning, design, engineering, consulting, and program and construction management services throughout the full project lifecycle.

Service detail: Planning and Design

Civil Services with a Forward-Thinking Approach

Project: VIA Park and Ride at Stone Oak

Improving Life. By Design.

Project: Rhode Island Corridor Modernization

AIG Technical Services, LLC is a Houston-based engineering consulting practice specializing in transportation infrastructure. It offers a multi-disciplinary blend of planning, engineering, and program management services for various transportation projects, ranging from local improvements to large-scale corridor developments across Texas. The practice focuses on delivering cost-effective and safe solutions by collaborating closely with public agency clients to address complex engineering and planning challenges.

Project: SH 146 Ferry Road to I-10 Schematic and Environmental Study

Innovative Engineering Solutions Since 1980

Project: I-75 (SR93A) Reconstruction, Hillsborough County

Best-In-Class Engineering Expertise

Project: Fremont Blvd/Old Warm Springs Blvd - New Signal