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

Authentic partnerships are the best way to design and deliver projects that create lasting value.

Project: Barry County Broadband Assessment and Implementation Plan

One Vision. Shared Future.

Project: Wells Street Bridge over the Chicago River

One Vision. Shared Future.

Project: Central Tri-State Tollway Mile Long Bridge (I-294) Reconstruction

Engineering Resource Associates, Inc. (ERA) is a full-service civil engineering, structural design, environmental science, and surveying firm serving clients throughout Illinois, Indiana, and Wisconsin. Founded in 1990, ERA's professional planners, engineers, and scientists work together to integrate engineering design, environmental improvements, and aesthetic appeal across municipal, park district, forest preserve, county, state, commercial, and private projects.

Service detail: Environmental Science

Ingenuity That Shapes Lives

Service detail: Transportation

Ingenuity That Shapes Lives

Project: O'Hare International Airport Terminal 5 Expansion

collaborate | formulate | innovate

Project: Baird Center Expansion

Solving Complex Challenges in Natural and Built Environments

Project: Upper Roberts Meadow Reservoir Dam Breach and Stream Restoration Project

Leading community-centered, sustainable projects across the country.

Service detail: Civil Engineering

Helping communities create sustainable infrastructure and environments

Project: Tower Lakes Watershed Study

Civil engineering driven by a passion for solving infrastructure challenges through ingenuity.

Project: George Washington Bridge Priority Repairs

KPFF exists to engineer opportunities that have a positive impact on people, places, and the planet.

Project: Portland International Airport (PDX), Terminal Core Redevelopment

Trusted Infrastructure Services for Aviation, Transportation, and Water

Project: DFW On-Call Signage Implementation Support

M3 Engineering Group, P.C. is a civil and environmental engineering firm founded in 2009 and headquartered in St. Louis, Missouri, with offices in Chicago and St. Charles. M3EG provides engineering planning and design services for public and private clients in water and wastewater systems, stormwater management, stream restoration, site design, construction management, transportation, and asset management. Its engineers bring recognized expertise in streambank erosion, geomorphology, and force main rehabilitation, serving municipal utilities, local water resource agencies, and public works departments across the St. Louis and Chicago regions.

Service detail: Stream Restoration

We deliver creative solutions to complex problems

Project: O'Hare 10 Center

Let's create tomorrow, together

Project: Quincy Square on Fourth Street

We Solve Our Clients' Most Challenging Environmental Issues

Service detail: Engineering & Remediation Services

Engineering, from the ground up.

Project: Dominick Bridge at Lincoln Yards

Geotechnical & Environmental Consultants

Project: Lower Dungeness River Floodplain Restoration and Levee Realignment