Public engineering firm directory

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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

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

Mesa Associates, Inc.

Madison, AL

Engineers and Consultants

WebsitePhone18 offices2 leadersFounded 1988Size Estimate: 1,000+ employeesUpdated Jun 2026

Service detail: Engineering & Design Services

Service: Engineering & Design ServicesService: 3D ModelingService: UAV InspectionIndustry: IndustrialIndustry: ManufacturingType: Civil Engineering+18 more

Thouvenot, Wade & Moerchen, Inc. (TWM)

Swansea, IL

Exceptional Service. Nothing Less.

WebsitePhone1 office2 projects13 credentialsSize Estimate: 200+ employeesUpdated Jun 2026

Project: Pierce Terrace Elementary School

Service: Transportation & Traffic EngineeringService: Roadway DesignService: Traffic & Safety StudiesIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+34 more