Public engineering firm directory

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Thompson Engineering

Mobile, AL

Professionals Providing Solutions

WebsitePhone1 officeFounded 1953Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Subsurface Utility EngineeringService: Drainage Studies and DesignIndustry: TransportationIndustry: IndustrialType: Architecture & Engineering+81 more

Thompson, Dreessen & Dorner, Inc.

Omaha, NE

Professionals at Every Turn

WebsitePhone2 offices8 projects11 leaders1 credentialsFounded 1967

Project: Nebraska Medicine Lauritzen Outpatient Center

Service: Civil EngineeringService: Site DesignService: Subdivision DesignIndustry: EducationIndustry: HealthcareType: Civil Engineering+36 more

Thoroughbred Engineering

Lexington, KY

Design Engineer Construct

WebsitePhone1 office1 credentialsUpdated Jun 2026

Service detail: Site Planning and Civil Engineering

Service: Site Planning and Civil EngineeringService: Property due diligenceService: Feasibility studiesIndustry: CommercialIndustry: Food & BeverageType: Civil Engineering+52 more

Three Notch Group

Andalusia, AL

Guidance. Expertise. Partnership.

WebsitePhone1 officeFounded 1946Updated Jun 2026

Service detail: Civil & Site Development

Service: Civil & Site DevelopmentService: Site designService: GradingIndustry: GovernmentIndustry: Environmental & RemediationType: Civil Engineering+43 more

Tierra South Florida, Inc. (TSFGeo)

West Palm Beach, FL

Reliable, In-Depth Solutions

WebsitePhone4 offices9 leaders3 credentialsFounded 2000Size Estimate: 1-25 employees

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface ExplorationService: Laboratory Testing and AnalysisIndustry: AviationIndustry: TransportationType: Geotechnical Engineering+30 more

Tierra, Inc.

Tampa, FL

Full Service Geotechnical, Structural, Forensic, Environmental and Construction Materials Testing Engineering

WebsitePhone3 offices3 projects5 credentialsFounded 1992Size Estimate: 1-25 employees

Project: I-4 / Crosstown Connector Segment 3C, Hillsborough County

Service: Geotechnical EngineeringService: Geotechnical DrillingService: Subsurface InvestigationIndustry: GovernmentIndustry: TransportationType: Geotechnical Engineering+36 more

Tigerbrain Engineering Inc

Global leader in high-performance airfield and heavy load logistics pavements

Website4 projects6 leadersFounded 2000Size Estimate: 55 employeesUpdated Jun 2026

Project: Little Rock AFB Primary Runway Reconstruction

Service: Pavement Investigation and Geotechnical TestingService: Pavement Coring and BoringService: Soil BoringsIndustry: AviationIndustry: Ports & HarborsType: Civil Engineering+25 more

Tighe & Bond

Westfield, MA

Environmental consulting with purpose.

Website8 offices2 projects7 leaders2 credentialsFounded 1911Size Estimate: 500-999 employees

Project: Climate Vulnerability Assessment for Massachusetts Watersheds

Service: Building ServicesService: MEP/FP DesignService: Energy Analysis & ModelingIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+38 more

Timonier Systems

El Segundo, CA

Architect-Led · Defense-Grade · Fixed-Scope

Website1 office3 projects3 leaders6 credentialsUpdated Jun 2026

Project: MILSATCOM Systems Engineering, Integration & Test

Service: SATCOM Systems EngineeringService: Systems Architecture and CONOPSService: RF Chain EngineeringIndustry: DefenseIndustry: GovernmentType: Defense Engineering+23 more

Tolunay Engineering Group Inc.

Houston, TX

Deep Industry Knowledge

WebsitePhone2 offices4 leadersFounded 2016Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Soil Borings and Cone Penetrometer TestsService: Laboratory TestingIndustry: CommercialIndustry: IndustrialType: Geotechnical Engineering+18 more

Tolunay-Wong Engineers, Inc.

Houston, TX

Your Trusted Partner in Geotechnical Engineering Solutions

WebsitePhone13 offices2 leadersSize Estimate: 50-150 employeesUpdated Jun 2026

Service detail: Geotechnical Investigations

Service: Geotechnical InvestigationsService: Site assessmentsService: Foundation design recommendationsIndustry: ResidentialIndustry: CommercialType: Geotechnical Engineering+23 more

Tourney Consulting Group, LLC

Kalamazoo, MI

Tourney Consulting Group, LLC (TCG) is a Kalamazoo, Michigan-based consulting engineering and materials testing firm focused on concrete durability, corrosion, and service-life solutions for new and existing structures. Founded in 2000, TCG conducts structural forensic investigations, develops concrete system designs and performance specifications, and operates an in-house materials laboratory for concrete mix testing and detailed analysis. Its professionals specialize in evaluating and extending the service life of bridges, parking structures, and marine infrastructure.

WebsitePhone1 office14 credentialsFounded 2000Updated Jun 2026

Service detail: Concrete Durability Evaluation and Service Life Assessment

Service: Concrete Durability Evaluation and Service Life AssessmentService: Concrete System DesignService: Performance Specification DevelopmentIndustry: BridgesIndustry: ParkingType: Materials Testing+6 more

Townes Site Engineering

Midlothian, VA

Dependable Civil Engineering, Surveying, and Environmental Services in Richmond, VA

WebsitePhone1 office5 projects4 credentialsFounded 1973Updated Jun 2026

Project: Metropolis Apartments

Service: Civil EngineeringService: Subdivision construction documentsService: Site and plan of development construction documentsIndustry: IndustrialIndustry: CommercialType: Civil Engineering+59 more

Transtecs Corporation

Wichita, KS

Achieving the Highest Standards

Website1 office2 credentialsSize Estimate: 150+ employeesUpdated Jun 2026

Service detail: Training Services

Service: Training ServicesService: Training Systems AnalysisService: Curriculum Development and MaintenanceIndustry: FederalIndustry: DefenseType: Defense Engineering+33 more

TriState Planning Engineering & Land Surveying, P.C.

Hauppauge, NY

A better State, by design.

Website3 offices7 projects2 leaders4 credentialsFounded 1984Updated Jun 2026

Project: Roadway Rehabilitation: Tuckahoe Road (CR 36 & CR 59)

Service: Aviation EngineeringService: Airport PlanningService: Aviation DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+48 more

TriVector Services

Huntsville, AL

Experience, Performance, Value

Website1 office5 projects6 leaders2 credentialsFounded 2008Updated Jun 2026

Project: AH-64D Apache Tactical Software Modification & Airworthiness Certification

Service: Specialized EngineeringService: Avionics and Flight SoftwareService: Propulsion and MaterialsIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+16 more

Triad Engineering, Inc.

Scott Depot, WV

Triad Listens, Designs & Delivers.

Website10 officesFounded 1975Size Estimate: 100-249 employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Grading and Development PlansService: Stormwater ManagementIndustry: CommercialIndustry: ResidentialType: Civil Engineering+109 more

Triax Engineering LLC

Commerce City, CO

High-Quality Engineering Solutions Customized to Fit Your Project

WebsitePhone2 offices1 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering Services

Service: Geotechnical Engineering ServicesService: Subsurface ExplorationService: Laboratory TestingIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+64 more

Tried & True Metrology, LLC

Suffolk, VA

Trusted Metrology Services Across the United States

WebsitePhone1 office1 credentialsUpdated Jun 2026

Service detail: 3D Inspection

Service: 3D InspectionService: First Article Inspection (FAI) & PPAP SupportService: In-Process InspectionIndustry: AerospaceIndustry: AutomotiveType: Materials Testing+22 more

Trinity Engineering & Technical Services, LLC

North Adams, MA

Quality, Value, Service

WebsitePhone1 office7 projects3 leaders5 credentialsFounded 1997

Project: Title 5 Septic System, Sherborn, MA

Service: Civil EngineeringService: Stormwater Design & PermittingService: Erosion ControlIndustry: ResidentialIndustry: Land DevelopmentType: Civil Engineering+33 more

Tristar Engineering and Management, Inc.

Phoenix, AZ

Timely. Thorough. Trustworthy.

WebsitePhone1 office7 projects8 leaders4 credentialsFounded 2002

Project: Cooper Road and Guadalupe Road Intersection Improvements

Service: Construction AdministrationService: Low Bid Contract AdministrationService: Job Order ContractingIndustry: GovernmentIndustry: TransportationType: Civil Engineering+20 more

Triton Engineers, Inc.

San Diego, CA

Building a better waterfront through innovative solutions and long-lasting relationships

WebsitePhone1 office8 projects2 leadersFounded 1997Updated Jun 2026

Project: Shelter Island Boat Launch Improvements

Service: Waterfront EngineeringService: Pier, Jetty, and Wharf StructuresService: Mooring DolphinsIndustry: MarineIndustry: Ports & HarborsType: Civil Engineering+70 more

Triumph Services LLC

Cleveland, OH

Engineering + Material Testing

WebsitePhone3 offices2 leaders1 credentialsUpdated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Mechanical EngineeringService: HVAC DesignIndustry: EducationIndustry: IndustrialType: MEP+21 more

Tuazon Engineering, PLLC

Renton, WA

Fire Protection Engineering & Code Consulting

Website1 office6 projectsUpdated Jun 2026

Project: Washington State Capitol Campus Life Safety Surveys

Service: Fire Protection and Life Safety Code ConsultingService: Hazardous Materials Inventory Statement PreparationService: Alternative Methods and Materials AnalysisIndustry: IndustrialIndustry: CommercialType: Fire Protection Engineering+21 more