Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

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2IM Group, LLC

Chicago, IL

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.

WebsitePhone1 office5 projects
Service: Highways, Roads, and StreetsService: Roadway geometryIndustry: TransportationType: Civil Engineering+31 more

3T Design & Development LLC

Kansas City, MO

Air. Land. Water.

WebsitePhone1 office1 leaders
Service: Air Quality and Environmental ComplianceService: Air Quality Permitting SupportIndustry: TransportationType: Civil Engineering+27 more

5 Smooth Stones Restoration

Specialists in applied fluvial geomorphology and stream restoration

Website7 projects3 leadersFounded 2015
Service: Geomorphic Assessment and Stream Restoration DesignService: Watershed Assessment and Gage AnalysisIndustry: Environmental & RemediationType: Environmental Engineering+17 more

5020 Engineering Resource Group, Incorporated

Civil, Water Resources, and Environmental Engineering Services

Website4 leaders1 credentialsFounded 2022
Service: Water and Wastewater EngineeringService: Water and Wastewater Conveyance SystemsIndustry: Water ResourcesType: Civil Engineering+21 more

609 Consulting, LLC

Sheridan, WY

Engineering Excellence Delivering High-Quality Engineering, Surveying & Consulting Services to the Rocky Mountain Region

WebsitePhone4 offices8 leaders
Service: Civil EngineeringService: Road Engineering DesignIndustry: Oil & GasType: Civil Engineering+27 more

A D Marble Co Inc

King of Prussia, PA

Environmental, Cultural, and Water Resources Engineering

Website4 offices5 leadersUpdated Jun 2026
Service: Environmental EngineeringService: Environmental Clearance and PermittingIndustry: FederalType: Environmental Engineering+16 more

ACT Engineers, Inc.

Robbinsville, NJ

Civil, Coastal, and Environmental Engineering and Consulting Practice

WebsitePhone3 offices5 projects
Service: Civil/Site EngineeringService: Coastal EngineeringIndustry: GovernmentType: Civil Engineering+30 more

ADV-SOC, Inc.

San Diego, CA

Mission-Driven.

WebsitePhone1 office9 projects
Service: Environmental ServicesService: Phase I and Phase II Environmental Site AssessmentsIndustry: FederalType: Architecture & Engineering+41 more

ATOKA, Inc.

Hot Springs, AR

Engineering and Environmental Consultants

WebsitePhone2 offices1 projects
Service: Civil EngineeringService: Strategic Planning and Land UseIndustry: Environmental & RemediationType: Civil Engineering+44 more

AXE Engineering Services

Bellingham, WA

Cutting Through Project Barriers.

WebsitePhone2 offices8 leaders
Service: Civil EngineeringService: Stormwater & Drainage PlansIndustry: ResidentialType: Civil Engineering+14 more

Ackerman-Estvold Engineering & Management Consulting, Inc.

Minot, ND

architects + engineers

WebsitePhone4 offices3 projects
Service: Civil EngineeringService: Traffic & Transportation EngineeringIndustry: GovernmentType: Civil Engineering+45 more

Acorn Engineering, Inc.

Portland, ME

Civil Engineering, Surveying, and Landscape Architecture in Maine

WebsitePhone3 offices3 projects
Service: Civil EngineeringService: Site Development DesignIndustry: ResidentialType: Civil Engineering+40 more

Ad Astra Collaborative, LLC

Diverse Capabilities, Flexible Solutions

Website2 projects3 leadersSize Estimate: 1-50 employees
Service: Water Resources EngineeringService: Stormwater Design & Watershed PlanningIndustry: GovernmentType: Civil Engineering+25 more

Advanced Engineering and Academic Sciences (AEAS)

Denver, CO

Experts in Water Resources Consulting and Engineering

Website1 office2 projects1 leaders
Service: Water Resources EngineeringService: Hydrologic AnalysisIndustry: Water ResourcesType: Water / Wastewater Engineering+33 more

Affinis

Overland Park, KS

Civil Engineering and Surveying for the Kansas City Region

WebsitePhone1 office4 projects
Service: Roadway EngineeringService: Residential Street DesignIndustry: GovernmentType: Civil Engineering+31 more

Agha Engineering, LLC

Houston, TX

Engineering Innovation Forward

WebsitePhone1 office8 projects
Service: Transportation EngineeringService: Roadway DesignIndustry: TransportationType: Civil Engineering+26 more

Alpha & Omega Group, PC

Raleigh, NC

Begin with the End in mind

WebsitePhone1 office3 leaders
Service: Civil-Site EngineeringService: Site Planning and DesignIndustry: GovernmentType: Civil Engineering+48 more

Anderson Bogert

Marion, IA

Professional and relationship-based civil engineering and surveying.

WebsitePhone2 offices6 leaders
Service: Transportation EngineeringService: Roadway designIndustry: GovernmentType: Civil Engineering+28 more

Antillean Engineers Inc

St. Croix, VI

Engineering Quality in Every Project

WebsitePhone1 office5 projects
Service: Civil EngineeringService: Subdivision PlanningIndustry: AirportsType: Civil Engineering+29 more

Apex Engineering Group

Fargo, ND

Apex Engineering Group brings clarity and confidence to complex engineering projects.

WebsitePhone7 offices11 projects
Service: Water EngineeringService: Water wells and intake structuresIndustry: GovernmentType: Civil Engineering+85 more

Applied Science, Inc.

Southfield, MI

Solutions to your Challenges

WebsitePhone2 offices3 leaders
Service: Civil and Site DesignService: Site Planning and Subdivision LayoutIndustry: Water SupplyType: Civil Engineering+38 more

Applied Sciences Consulting, LLC

Tampa, FL

Engineering a sustainable future

WebsitePhone1 office5 projects
Service: Watershed PlanningService: Watershed & Master PlansIndustry: Water ResourcesType: Civil Engineering+31 more

Aqua Vitae Engineering, LLC

Arlington Heights, IL

Water & Life

WebsitePhone2 offices3 leaders
Service: Planning, Design, and ImplementationService: Low Impact Development (LID)Industry: Water ResourcesType: Civil Engineering+16 more

Ardaman & Associates, Inc.

Orlando, FL

Meeting All Your Project Needs, Anywhere

WebsitePhone8 offices7 projects
Service: Geotechnical and Foundation EngineeringService: Subsurface exploration and boringsIndustry: MiningType: Civil Engineering+67 more