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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303rd Engineering Group, LLC

St. Louis, MO

Successful Partnerships, Successful Projects

WebsitePhone1 office5 projects1 leaders1 credentialsFounded 2005

Project: Airmen's Dormitories, Scott Air Force Base

Service: Electrical EngineeringService: Fire Alarm SystemsService: Energy ConservationIndustry: GovernmentIndustry: FederalType: MEP+18 more

A & M Engineering and Environmental Services, Inc.

Tulsa, OK

Providing Quality Services for Over 30 Years

WebsitePhone4 offices5 projects2 credentialsFounded 1984Updated Jun 2026

Project: Cumberland Levee Repair at Lake Texoma

Service: Construction & Remediation ServicesService: Landfill ConstructionService: Impoundments & Water StructuresIndustry: Environmental & RemediationIndustry: FederalType: Environmental Engineering+72 more

ABNA Engineering, Inc.

St. Louis, MO

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

WebsitePhone3 offices4 projects11 leaders3 credentialsFounded 1994

Project: Washington Avenue Streetscape Project

Service: Civil EngineeringService: Water Resources EngineeringService: Municipal UtilitiesIndustry: InfrastructureIndustry: TransportationType: Civil Engineering+41 more

Alper Audi, Inc.

St. Louis, MO

Founded in 1950, Alper Audi, Inc. is a St. Louis-based structural engineering practice with engineers registered in more than 45 states. It serves architects, contractors, developers, owners, and government clients across commercial, industrial, institutional, and public markets. More than 50 percent of assignments are delivered on a design-build basis, and annual project volume contributes to more than $2.5 billion in aggregate construction value.

WebsitePhone2 offices13 projects8 leadersFounded 1950Updated Jun 2026

Project: Forsyth Pointe

Service: Structural EngineeringService: Reinforced Concrete DesignService: Structural Steel DesignIndustry: CommercialIndustry: IndustrialType: Structural Engineering+18 more

Amodu Engineering Solutions, LLC

St. Louis, MO

Building Relationships through Affordable Engineering Excellence

WebsitePhone1 office1 leaders17 credentialsFounded 2007Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC Load Calculation ServicesService: Energy Modeling and AnalysisIndustry: HealthcareIndustry: EducationType: MEP+27 more

Anvil Engineering

St. Louis, MO

Leaders in structural engineering

WebsitePhone1 office4 projects2 leadersFounded 2016Updated Jun 2026

Project: ICL Group Chemical Processing Building

Service: Foundations & Flatwork DesignService: Building FoundationService: Equipment FoundationIndustry: IndustrialIndustry: ManufacturingType: Structural Engineering+17 more

Axys Development LLC

St. Louis, MO

Advanced Automation & Control Systems for Critical Infrastructure

Website1 officeUpdated Jun 2026

Service detail: Building Automation Systems

Service: Building Automation SystemsService: Power Monitoring & ManagementService: Environmental Control & MonitoringIndustry: Data CentersIndustry: Mission Critical FacilitiesType: Automation & Controls+4 more

Basilico Engineering, Inc.

St. Louis, MO

Basilico Engineering, Inc. is a professional engineering firm in the St. Louis, Missouri area, incorporated in November 2000. It specializes in Civil, Environmental, and Geotechnical Engineering and also provides Material Testing and Construction Inspection services. Basilico Engineering serves public agencies and private clients throughout the St. Louis region and maintains relationships with area universities including UMR, SIUE, and Washington University.

Website1 office1 leaders8 credentialsFounded 2000Updated Jun 2026
Service: Civil EngineeringService: Environmental EngineeringService: Geotechnical EngineeringIndustry: GovernmentIndustry: TransportationType: Civil Engineering+8 more

Benham, a Haskell Company

Oklahoma City, OK

Tomorrow's Design Since 1909

WebsitePhone6 offices4 projectsFounded 1909Size Estimate: 200-500 employeesUpdated Jun 2026

Project: Osprey Maintenance Hangars

Service: ArchitectureService: EngineeringService: DesignBuildIndustry: InfrastructureIndustry: HealthcareType: Architecture & Engineering+35 more

CBB

St. Louis, MO

Expert. Trusted Advisor. Friend.

WebsitePhone3 offices20 projects2 leaders23 credentialsFounded 1973

Project: I-270 North Design-Build

Service: Transportation PlanningService: Transportation Studies and PlanningService: Transportation ModelingIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+11 more

CD Companies

St. Louis, MO

National Architecture, Engineering, and Interior Design

WebsitePhone1 office9 projectsSize Estimate: 100-200 employeesUpdated Jun 2026

Project: CD Companies Headquarters Remodel

Service: Civil EngineeringService: Site DevelopmentService: Stormwater Drainage DesignIndustry: CommercialIndustry: RetailType: Architecture & Engineering+27 more

CDG Engineers, Inc.

St. Louis, MO

Engineering a better way.

WebsitePhone4 offices2 projects1 leadersFounded 1992Size Estimate: 100+ employees

Project: Cedar Rapids Reach 1 Flood Protection

Service: Architectural EngineeringService: Civil EngineeringService: Flood ProtectionIndustry: UtilitiesIndustry: Electric UtilitiesType: Civil Engineering+22 more

Civil & Environmental Consultants, Inc.

Pittsburgh, PA

We Own It.

WebsitePhone14 offices9 leaders2 credentialsFounded 1989Size Estimate: 1,500 employees

Service detail: Civil Engineering

Service: Air QualityService: Civil EngineeringService: One Of Cec's Four Founding PracticesIndustry: ManufacturingIndustry: MiningType: Civil Engineering+31 more

Civil Design, Inc.

St. Louis, MO

Quality Infrastructure. Passionate People. Stronger Communities.

Website6 offices3 projects16 leadersFounded 1996Size Estimate: 100-249 employeesUpdated Jun 2026

Project: Central District Pedestrian Improvements

Service: Infrastructure + AnalyticsService: GIS MappingService: Database ManagementIndustry: GovernmentIndustry: WastewaterType: Civil Engineering+26 more

Cjd Engineering Llc Mo Springfield 2

Springfield, MO

Engineering Excellence for a Sustainable Future.

Website2 offices2 credentialsUpdated Jun 2026

Service detail: Testing, Adjusting and Balancing

Service: Mechanical EngineeringService: Electrical EngineeringService: Testing, Adjusting and BalancingIndustry: EducationIndustry: HealthcareType: Automation & Controls+10 more

Cochran Engineering

Union, MO

Full Service Civil Engineering, Construction, and Architectural Firm

WebsitePhone7 offices10 projects1 leadersUpdated Jun 2026

Project: Walgreens

Service: Civil EngineeringService: Feasibility StudiesService: Site Selection and PlanningIndustry: CommercialIndustry: RetailType: Civil Engineering+37 more

Code Consultants Inc

El Segundo, CA

Experts Responsive Solutions

WebsitePhone5 offices1 leaders4 credentialsFounded 1973Updated Jun 2026

Service detail: Fire Protection and Life Safety

Service: Fire Protection and Life SafetyService: Code ConsultationService: Fire and Egress ModelingIndustry: CommercialIndustry: RetailType: Fire Protection Engineering+48 more

Cole & Associates, Inc.

St. Louis, MO

Problem solved.

WebsitePhone4 offices8 projects8 leadersFounded 1990Updated Jun 2026

Project: TxDOT Statewide ADA Transition Plan

Service: Civil EngineeringService: Land DevelopmentService: InfrastructureIndustry: GovernmentIndustry: ResidentialType: Civil Engineering+28 more

Counsilman-Hunsaker

St. Louis, MO

Aquatics for Life

WebsitePhone4 offices7 projects2 credentials2 publicationsFounded 1970

Project: O'Neil Park Pool

Service: Aquatic DesignService: Aquatic architectural designService: Pool systems engineeringIndustry: GovernmentIndustry: EducationType: Water / Wastewater Engineering+22 more

Crawford, Murphy & Tilly, Inc.

Springfield, IL

Elevating infrastructure, together.

WebsitePhone3 offices9 projects4 leaders5 credentialsFounded 1946

Project: Riverside Drive Riverfront Redevelopment

Service: PlanningService: Aviation PlanningService: Transportation PlanningIndustry: AirportsIndustry: GovernmentType: Aviation Engineering+32 more

Custom Engineering

Independence, MO

Custom Engineering is an MEP engineering firm founded in 1974 and headquartered in Independence, Missouri. It provides mechanical, plumbing, electrical, lighting, BIM, and commissioning design services for commercial, industrial, and institutional facilities nationwide, licensed in 39 states plus the District of Columbia. Custom Engineering has recently aligned with Timberlake Engineering and TIE Consulting to offer an integrated MEP plus low-voltage design approach. Clients include architects, owners, and construction managers across healthcare, education, government, industrial, and commercial sectors.

WebsitePhone4 offices4 credentialsFounded 1974Updated Jun 2026

Service detail: Mechanical/Plumbing Design

Service: Electrical and Lighting DesignService: Mechanical/Plumbing DesignService: Building Information Modeling (BIM)Industry: CommercialIndustry: IndustrialType: MEP+5 more

David Mason + Associates

St. Louis, MO

Exceptional Engineering. Innovative Construction Services. Dedicated to Our People.

WebsitePhone7 offices7 projectsFounded 1989Size Estimate: 100-250 employeesUpdated Jun 2026

Project: Jefferson National Expansion Memorial - Gateway Arch Grounds Renovations

Service: Civil EngineeringService: Structural EngineeringService: Survey and 3D ScanningIndustry: HealthcareIndustry: EducationType: Civil Engineering+20 more

Design Nine, Inc.

St. Louis, MO

We Know Railroad

WebsitePhone1 office10 projects11 credentialsFounded 1986Size Estimate: 1-25 employees

Project: Progress Rail Mayfield KY

Service: Railway EngineeringService: Conceptual PlanningService: Track DesignIndustry: RailType: Transportation Engineering+19 more

DuBois Consultants, Inc.

Kansas City, MO

Commitment, Collaboration, Cooperation

WebsitePhone3 offices5 projectsFounded 1988Updated Jun 2026

Project: Dry Weather Sewer Relief: Outfall 055

Service: Civil Engineering & DesignService: Sewer SystemsService: Stormwater ManagementIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+26 more