Public engineering firm directory

Find engineering consulting firms by capability and location.

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Transportation Resource Group, Inc.

York, PA

Consulting Engineers and Planners

WebsitePhone1 office6 projects6 leaders2 credentialsSize Estimate: 1-10 employees

Project: Harley-Davidson Eden Road Relocated

Service: Development Access PermittingService: Roadway and Intersection DesignService: Geometric LayoutsIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+17 more

Transtech Engineers Inc

Building Safer, Stronger Communities

Website8 projects4 credentialsFounded 1989Size Estimate: 300 employeesUpdated Jun 2026

Project: Rosemead Boulevard Bike Lanes and Street Improvements Project

Service: Municipal Engineering & Public WorksService: City EngineeringService: CIP Project ManagementIndustry: GovernmentIndustry: Public SafetyType: Civil Engineering+37 more

Trestles, LLC

Goodlettsville, TN

Engineering Innovative and Intellectual Solutions for the Environment

WebsitePhone1 office1 credentialsSize Estimate: 1-50 employeesUpdated Jun 2026

Service detail: Natural Gas Engineering

Service: Natural Gas EngineeringService: Compressor Station EngineeringService: Station Retrofits and ReversalsIndustry: Oil & GasIndustry: Environmental & RemediationType: Environmental Engineering+94 more

Tri-County Engineering Consultants

Shelby Township, MI

Responsive Professionals

WebsitePhone1 office12 projectsUpdated Jun 2026

Project: New Haven Sidewalks Rehab

Service: Municipal EngineeringService: Water Main and Sewer DesignService: Paving and Road RehabilitationIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+29 more

TriMedia Environmental & Engineering Services, LLC

Marquette, MI

TriMedia Environmental & Engineering Services, LLC is a multi-discipline environmental, health and safety, industrial hygiene, and land surveying firm headquartered in Marquette, Michigan, with regional offices in Wisconsin, Montana, Arizona, and Nebraska. Founded in 1995, TriMedia serves clients in oil and gas, power generation, mining, manufacturing, construction, healthcare, and government markets. Services span Phase I/II Environmental Site Assessments, soil and groundwater investigations, remediation, hazardous waste management, industrial hygiene, occupational health and safety programs, GIS, and land surveying. The firm employs Professional Engineers, Certified Safety Professionals, Certified Industrial Hygienists, and Certified Hazardous Materials Managers, and has developed the Drive Learning platform for EHS workforce training.

WebsitePhone1 office2 leadersFounded 1995Updated Jun 2026

Service detail: Environmental Consulting

Service: Environmental ConsultingService: Phase I Environmental Site AssessmentsService: Phase II Environmental Site AssessmentsIndustry: Environmental & RemediationIndustry: Oil & GasType: Environmental Engineering+30 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

Trihydro Corporation

Laramie, WY

Solutions you can count on. People you can trust.

WebsitePhone2 offices3 projects5 leaders1 credentialsFounded 1984

Project: Class VI Carbon Sequestration Project

Service: Environmental ConsultingService: Assessment and RemediationService: Permitting and ComplianceIndustry: Carbon CaptureIndustry: ChemicalsType: Chemical Engineering+33 more

Trillium Engineering Group

Falmouth, ME

A Maine-Based Civil + Structural Engineering Firm

WebsitePhone3 offices8 projects2 leadersUpdated Jun 2026

Project: The Sandpiper Apartments

Service: Structural EngineeringService: Structural DesignService: Structural EvaluationIndustry: CommercialIndustry: ResidentialType: Structural Engineering+24 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

Triple Point Engineering, Inc.

Macon, GA

Triple Point Engineering (TPE) is a civil and environmental engineering practice headquartered in Macon, Georgia. Founded in 2014 when the partners of Hulsey McCormick & Wallace elected to make each office an independent corporation, TPE brings over 25 years of combined practice history serving local and state governments, K-12 schools, colleges and universities, and private industrial clients throughout the Southeast. TPE provides civil, environmental, geotechnical, and mining-sector services, emphasizing responsiveness and long-term client relationships.

WebsitePhone1 office3 leadersFounded 2014Updated Jun 2026

Service detail: Mining Services

Service: Mining ServicesService: Environmental consulting and monitoringService: Mine planning and permittingIndustry: GovernmentIndustry: EducationType: Civil Engineering+17 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

True Environmental

Phoenix, AZ

Environmental Engineering Excellence

Website2 offices6 projects2 credentialsSize Estimate: 700 employeesUpdated Jun 2026

Project: Atlantic Shores Offshore Wind

Service: Engineering ServicesService: Environmental ServicesService: Federal Program ServicesIndustry: Environmental & RemediationIndustry: MiningType: Environmental Engineering+16 more

Trussell Technologies, Inc.

Pasadena, CA

Safe and sustainable solutions in water, wastewater, reuse, and desalination

WebsitePhone3 offices7 projects23 leadersFounded 2003Size Estimate: 10-99 employees

Project: San Diego Pure Water Program North City Pure Water Facility

Service: Water Reuse Planning and Treatment EngineeringService: Non-Potable Reuse ExpansionService: Potable Reuse EngineeringIndustry: Water SupplyIndustry: WastewaterType: Environmental Engineering+32 more

Turrell, Hall & Associates, Inc.

Naples, FL

Turrell, Hall & Associates, Inc. is a marine and environmental consulting firm established in 1988 in Naples, Florida, specializing in coastal engineering, waterfront development, and environmental services. Its marine team handles planning, design, engineering, and construction management of waterfront and marina projects; its environmental team guides permitting, compliance, and monitoring for projects in Florida and the Caribbean, with hundreds of completed projects including a significant body of work in the Bahamas. Luxury yacht marina design has become a recognized specialty.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Marine Engineering

Service: Marine EngineeringService: Waterfront Development DesignService: Marina DesignIndustry: MarineIndustry: Environmental & RemediationType: Marine Engineering+9 more

UES (Universal Engineering Sciences)

Orlando, FL

Grounded In Excellence

WebsitePhone5 officesSize Estimate: 4,000+ employeesUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface InvestigationService: Soil TestingIndustry: TransportationIndustry: InfrastructureType: Geotechnical Engineering+43 more

UNIPRO Architects - Engineers LLP

San Juan, PR

Since 1980, Providing High Quality Services to Our Clients in Puerto Rico and Abroad

WebsitePhone1 office3 leadersFounded 1980Updated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Architectural ProgrammingService: Zoning and PermittingIndustry: CommercialIndustry: EducationType: Architecture & Engineering+26 more

USI Consultants, Inc.

Indianapolis, IN

Moving Infrastructure Forward

WebsitePhone1 office2 credentialsFounded 1976Size Estimate: 25-50 employeesUpdated Jun 2026

Service detail: Bridge Design

Service: Bridge DesignService: New and replacement bridge designService: Bridge rehabilitationIndustry: GovernmentIndustry: Highways & RoadsType: Civil Engineering+55 more

Uhl Engineering, Inc.

Overland Park, KS

Quality Service Since 1995

WebsitePhone1 officeFounded 1995Updated Jun 2026

Service detail: Civil and Site Engineering

Service: Civil and Site EngineeringService: Engineering Design and Construction DocumentsService: Preliminary EngineeringIndustry: CommercialIndustry: IndustrialType: Civil Engineering+31 more

Uinta Engineering & Surveying, Inc.

Evanston, WY

Uinta Engineering & Surveying, Inc. (UESI) is a civil engineering and land surveying firm with offices in Evanston and Rock Springs, Wyoming. Founded in 1973, UESI has provided professional engineering and surveying services to Southwest Wyoming for over five decades. UESI maintains a staff of approximately 15 employees, including four professionals registered in Wyoming, and holds registrations in Utah for both engineering and land surveying. UESI's engineering department is led by three licensed professional civil engineers and covers a broad range of infrastructure and environmental disciplines. Its land surveying department fields conventional and GPS crews, and a dedicated drafting department provides CAD support and mapping for both engineering and surveying projects.

Website2 officesFounded 1973Size Estimate: 15 employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Planning and Land DevelopmentService: Highways, Road and Street DesignIndustry: Highways & RoadsIndustry: Water SupplyType: Civil Engineering+43 more

Uintah Engineering & Land Surveying

Vernal, UT

Experienced Professionals Delivering Outstanding Results

WebsitePhone8 offices1 credentialsFounded 1964Updated Jun 2026

Service detail: Land Surveying

Service: Land SurveyingService: Well location pad layout and well stakingService: Construction site staking and as-built surveysIndustry: Oil & GasIndustry: Renewable EnergyType: Civil Engineering+21 more

Ulteig Engineers, Inc.

Creating Innovative Infrastructure Solutions

Website8 projects2 leadersFounded 1944Updated Jun 2026

Project: TxDOT FM 159 Roadway Realignment

Service: Power EngineeringService: Substation Engineering and DesignService: Transmission Engineering and DesignIndustry: Power GenerationIndustry: Power Transmission & DistributionType: Civil Engineering+53 more

Underwood Engineers

Portsmouth, NH

Creative Solutions for a Better Tomorrow

WebsitePhone2 offices4 leadersUpdated Jun 2026

Service detail: Water Engineering

Service: Water EngineeringService: PlanningService: SourceIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+13 more

UniWave LLC

Moore, SC

Fiber-optic network design built for construction

WebsitePhone1 officeUpdated Jun 2026

Service detail: GIS & Basemapping

Service: GIS & BasemappingService: Data Preparation & Boundary SetupService: Basemapping DevelopmentIndustry: TelecommunicationsIndustry: InfrastructureType: Telecom / RF Engineering+11 more

United Engineers Inc

Houston, TX

How Engineering Should Be.

WebsitePhone1 office2 leadersFounded 1995Updated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Feasibility StudiesService: Preliminary and Final PlattingIndustry: CommercialIndustry: GovernmentType: Civil Engineering+38 more