Public engineering firm directory

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Willett Engineering Company

Tucker, GA

A structural design team you can lean on.

WebsitePhone2 offices4 projects4 leaders1 credentialsFounded 1990

Project: Midtown High School

Service: Structural Engineering ServicesService: New Building DesignService: Construction AdministrationIndustry: ManufacturingIndustry: IndustrialType: Structural Engineering+18 more

Wiss, Janney, Elstner Associates, Inc.

Northbrook, IL

Solutions for the Built World

WebsitePhone30 offices5 projects5 credentials5 publicationsFounded 1956

Project: Washington Monument

Service: Structural EngineeringService: Bridge EngineeringService: Heavy Movable StructuresIndustry: GovernmentIndustry: TransportationType: Architecture & Engineering+54 more

Woodard & Curran

Portland, ME

Clean Water, Safe Environment, Healthy Communities, Happy People

Website25 offices3 projects7 leadersFounded 1979Size Estimate: 1,300+ employeesUpdated Jun 2026

Project: Lead Testing in NYC Drinking Water Fountains

Service: WaterService: Water TreatmentService: Water ReuseIndustry: GovernmentIndustry: EducationType: Design-Build+15 more

Young & Hedrick Engineering, LLC

Lakewood Ranch, FL

Young & Hedrick Engineering (YHE) is a Lakewood Ranch, Florida-based structural engineering practice specializing in custom residential and commercial structural engineering, renovation support, and expert witness services. It serves builders, architects, contractors, and homeowners throughout Florida and the East Coast. Licensed in states including Florida, New York, Alabama, Connecticut, Georgia, Ohio, Massachusetts, Nevada, North Carolina, Texas, West Virginia, and Washington DC, YHE emphasizes value engineering, safety, and continuous on-site construction support from initial design through certificate of occupancy.

WebsitePhone1 office2 leaders1 credentials3 publicationsSize Estimate: 1-10 employees

Service detail: Residential Structural Engineering

Service: Residential Structural EngineeringService: Wood-Frame, Masonry, and Concrete Residential StructuresService: Multi-Family Residential Structural EngineeringIndustry: ResidentialIndustry: Multifamily ResidentialType: Structural Engineering+27 more

Ysrael A. Seinuk, P.C.

New York, NY

Internationally Recognized Structural Engineering Excellence Since 1977

WebsitePhone2 offices8 projects4 leaders18 credentialsFounded 1977

Project: UB Jacobs School of Medicine and Biomedical Sciences

Service: Structural Engineering DesignService: High-Rise BuildingsService: Structures in Severe Wind and Seismic EnvironmentsIndustry: CommercialIndustry: ResidentialType: Structural Engineering+32 more

exp Federal Inc.

Chicago, IL

Architecture + Engineering | Construction | Mission Support

Website5 offices9 projects1 credentialsFounded 2012Size Estimate: 250-500 employeesUpdated Jun 2026

Project: Fish Dispersal Barrier

Service: ArchitectureService: Master PlanningService: Facilities ProgrammingIndustry: DefenseIndustry: FederalType: Architecture & Engineering+45 more