Public engineering firm directory

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AEG - A SOCOTEC Company

Mechanicsburg, PA

Engineering, Surveying, and Inspections

WebsitePhone1 office3 projects3 credentialsUpdated Jun 2026

Project: 95REVIVE Pottstown Expressway Reconstruction

Service: Geotechnical EngineeringService: Geotechnical Engineering and Foundation DesignService: Design of Earth Structures and Retaining WallsIndustry: TransportationIndustry: BridgesType: Geotechnical Engineering+64 more

B.A. Sims Engineering, Inc.

Long Beach, CA

B.A. Sims Engineering, Inc. is a structural and civil engineering consulting practice located in Long Beach, California. Licensed across multiple U.S. states and Canadian provinces, it provides structural design, civil and construction design, bridge engineering, and public art structural support with rapid response times.

WebsitePhone1 office7 projects6 leaders2 credentialsSize Estimate: 1-9 employees

Project: Manhattan Beach Basement Shoring

Service: Structural Engineering and DesignService: New Commercial Construction and RemodelsService: New Residential Construction, Remodels, and ADUsIndustry: ResidentialIndustry: CommercialType: Structural Engineering+25 more

Berns Infrastructure, LLC

Complex Projects. Proven Solutions.

Website8 projects1 leaders1 credentialsFounded 2017Size Estimate: 1-10 employeesUpdated Jun 2026

Project: I-515 Charleston Boulevard Interchange

Service: Construction Engineering DesignService: Earth Retention SystemsService: Soldier Pile WallsIndustry: Highways & RoadsIndustry: BridgesType: Civil Engineering+38 more

Colorado Geoscience & Design

Franktown, CO

The Science of Design

WebsitePhone1 office2 leadersUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Soil TestingService: Percolation & Pit TestingIndustry: CommercialIndustry: Land DevelopmentType: Architecture & Engineering+35 more

DMD Engineering and Testing, Inc.

Roswell, GA

A Greener Tomorrow

WebsitePhone1 office4 leaders5 credentialsFounded 1994Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface Investigation and Foundation RecommendationsService: Shallow and Deep Foundations Monitoring and QA/QC InspectionsIndustry: Parks & Open SpaceIndustry: ReligiousType: Geotechnical Engineering+26 more

GAI Consultants, Inc.

Indianapolis, IN

Transforming Ideas Into Reality®

WebsitePhone5 offices24 leaders4 publicationsFounded 1958Updated Jun 2026

Service detail: Environmental Services

Service: Environmental ServicesService: Environmental Impact Analysis and NEPA DocumentationService: Permitting and Regulatory ComplianceIndustry: Power GenerationIndustry: Renewable EnergyType: Civil Engineering+44 more

GeoCiv Engineering Consultants, LLC

Albertville, AL

Building Trust. Engineering Partnerships.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Stormwater Management and BMPsService: Erosion and Sediment ControlIndustry: Stormwater & Flood ControlIndustry: Water ResourcesType: Civil Engineering+34 more

Intrepid Engineers LLC

Portersville, PA

Fear No Challenge

WebsitePhone1 office13 projects3 leadersUpdated Jun 2026

Project: Beaver River Bridge Segment Falsework & SOE

Service: Foundation EngineeringService: Pile Cap and Grade Beam DesignService: Spread Footer and Mat FoundationsIndustry: BridgesIndustry: Highways & RoadsType: Civil Engineering+24 more

National Engineering & Architectural Services, Inc.

National Engineering & Architectural Services

Website1 credentialsFounded 1992Size Estimate: 10-49 employeesUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Settlement and subsidence analysisService: Slope stability analysisIndustry: TransportationIndustry: BridgesType: Geotechnical Engineering+38 more

S.Q. Consultants, Inc.

Vienna, VA

Structural and Geotechnical Engineers - Consulting Services Committed to Excellence

WebsitePhone1 office1 projects2 leadersFounded 1987Size Estimate: 1-10 employees

Project: BWI International Airport - Modernization Program

Service: Structural EngineeringService: Structural Analysis of Load Bearing Walls and ColumnsService: Structural Evaluations of New and Existing BuildingsIndustry: ResidentialIndustry: CommercialType: Structural Engineering+29 more

SA Engineering LLC

Edison, NJ

Your Dependable Partner for Quality and Innovation

WebsitePhone2 offices3 projectsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: MTACC East Side Access - Track A Cut and Cover Structure

Service: Geotechnical and Structural EngineeringService: Subsurface investigationsService: Shallow and deep foundations (pile, drilled shafts, caissons)Industry: GovernmentIndustry: RailType: Civil Engineering+53 more

SALEM Engineering Group, Inc.

Fresno, CA

SALEM Engineering Group, Inc. is a multi-disciplined national engineering and environmental consulting firm headquartered in Fresno, California. SALEM provides geotechnical engineering, environmental consulting, civil engineering and land surveying, structural engineering, engineering geology, hydrogeology, forensic engineering, drilling, and construction inspection and materials testing services. With in-house drilling equipment and certified geotechnical laboratories, SALEM serves developers, architects, government agencies, utility companies, municipalities, insurance companies, attorneys, and private owners across the United States.

WebsitePhone1 office6 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Foundation and Slab Engineering DesignService: Subsurface Soil InvestigationsIndustry: ResidentialIndustry: CommercialType: Geotechnical Engineering+30 more

SJ Engineering Consultants, LLC

Knoxville, TN

Collaborating for Excellence in Design, Safety, and Engineering Management

WebsitePhone2 offices3 credentialsFounded 2022Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Planning and LayoutService: Land DevelopmentIndustry: CommercialIndustry: IndustrialType: Civil Engineering+114 more

Siefert Associates, LLC

Watertown, CT

Siefert Associates, LLC is a construction engineering firm serving clients in the New York City metropolitan area and beyond. Founded in June 2000 by Vincent Siefert, PE, the practice grew from a single-person operation to a team of more than 35 engineers across offices in Watertown, Connecticut, and White Plains, New York. Its specialty is construction engineering, determining the most efficient and creative means and methods for large-scale construction projects, complemented by structural, demolition, erection, and geotechnical engineering disciplines.

Website2 offices2 leadersFounded 2000Size Estimate: 35+ employeesUpdated Jun 2026

Service detail: Construction Engineering

Service: Construction EngineeringService: Temporary Support SystemsService: Staged Construction AnalysisIndustry: InfrastructureIndustry: BridgesType: Structural Engineering+20 more

Structured Design & Consulting LLC

Dublin, OH

Engineering with Excellence

WebsitePhone1 office1 leadersFounded 2013Updated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Timber DesignService: Reinforced Concrete DesignIndustry: ResidentialIndustry: CommercialType: Civil Engineering+31 more

TD&H Engineering

Great Falls, MT

A Full-Service Consulting Engineering Firm

Website9 offices8 projects5 leaders5 credentialsFounded 1965Size Estimate: 50-150 employees

Project: Great Falls Water Treatment Plant

Service: Civil EngineeringService: Site Civil Grading & Utility InfrastructureService: Stormwater Analysis & Drainage DesignIndustry: GovernmentIndustry: WastewaterType: Aviation Engineering+56 more

Tunstall Engineering Group

Cranberry Twp, PA

Tunstall Engineering Group (TEG) is a structural and geotechnical engineering firm based in Cranberry Township, Pennsylvania, recognized for its expertise in complex bridge projects of all kinds. TEG supplies the critical link between engineering and construction, excelling in both design-bid-build and design-build environments. The team brings deep experience in bridge design, bridge rehabilitation, erection engineering, geotechnical engineering, and support of excavation.

WebsitePhone1 office2 projectsUpdated Jun 2026

Project: Andy Warhol Bridge Rehabilitation

Service: Bridge EngineeringService: Bridge DesignService: Steel and Concrete Girder ErectionIndustry: TransportationIndustry: BridgesType: Structural Engineering+10 more

WES Consulting LLC

Prince William, VA

Engineering and Construction Management Services

WebsitePhone1 office1 projects6 credentialsFounded 2023Updated Jun 2026

Project: WMATA/WPMI/WWPL System-Wide PM/CM Support

Service: Project Controls & Cost EngineeringService: Project PlanningService: CPM SchedulingIndustry: InfrastructureIndustry: TransitType: Civil Engineering+34 more