Public engineering firm directory

Find engineering consulting firms by capability and location.

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SJH Engineering, P.C.

Princeton, NJ

Expert Engineering, Design, and Construction Management Solutions

WebsitePhone3 offices3 projects25 credentialsFounded 2006Size Estimate: 50-100 employees

Project: Portal Bridge

Service: Structural EngineeringService: Bridge DesignService: Transit Structure DesignIndustry: TransportationIndustry: RailType: Architecture & Engineering+20 more

Schematic Design, Inc.

Knoxville, TN

Civil, structural, and stormwater consulting engineering based in Knoxville

WebsitePhone2 offices5 projects1 leadersFounded 1994Size Estimate: 1-4 employees

Project: Mill Creek Power Station Stormwater Management

Service: Civil EngineeringService: Site DevelopmentService: Land Use and Feasibility StudiesIndustry: Land DevelopmentIndustry: CommercialType: Civil Engineering+25 more

Setu Engineering, PLLC

Designing for Durability, Inspecting with Integrity

Website1 leaders2 credentialsUpdated Jun 2026

Service detail: Bridge Design

Service: Bridge DesignService: On- and Off-System BridgesService: Multi-Level InterchangesIndustry: BridgesIndustry: Highways & RoadsType: Structural Engineering+26 more

Solaray Engineering, Inc.

Irving, TX

High Standards. Maximum Results.

WebsitePhone2 offices6 projects4 leaders22 credentialsFounded 2009

Project: US377 Cresson Bypass

Service: Transportation EngineeringService: Highway and Freeway Interchange DesignService: Drainage Design and Hydrologic StudiesIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+37 more

Sommer Engineering, Inc.

Newport Beach, CA

Sommer Engineering, Inc. is a Newport Beach, California civil and transportation engineering firm focused on the Southern California transportation market. Founded in 2020 by Merideth Cann, P.E., it applies more than 30 years of transportation industry experience to serve regional and local transportation agencies. Its work spans civil design for highway corridors, managed lanes, alternative delivery projects, rail and transit, grade separations, highway interchanges, and the design of bridges and retaining structures, as well as parking facilities and electric vehicle infrastructure planning. Clients include Los Angeles Metro, the Riverside County Transportation Commission, Caltrans Districts 7 and 8, Los Angeles World Airports, and multiple local agencies.

WebsitePhone1 office1 leadersFounded 2020Updated Jun 2026

Service detail: Civil Engineering & Design

Service: Civil Engineering & DesignService: Transportation EngineeringService: Bridge & Structure DesignIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+8 more

Srirama, LLC

Elevating Engineering: Innovation, Expertise, Excellence

Website3 projectsUpdated Jun 2026

Project: Maintenance of Traffic

Service: Transportation DesignService: Roadway DesignService: Advanced 3D ModelingIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+21 more

Stanley Consultants

Muscatine, IA

Connect. Create. Contribute.

Website1 office5 projects1 credentials3 publicationsFounded 1913Size Estimate: 1,000+ employees

Project: I-490/IL 390 Interchange

Service: Engineering & DesignService: Civil EngineeringService: Electrical EngineeringIndustry: Power GenerationIndustry: UtilitiesType: Architecture & Engineering+52 more

Stolfus & Associates, Inc.

Greenwood Village, CO

People-First Transportation Engineering

WebsitePhone1 office5 projects8 leaders5 credentialsFounded 2003

Project: City of Thornton 104th Avenue Widening (CO 92 to US 85)

Service: Transportation Planning & ConsultingService: Alternative StudiesService: Planning and Environmental Linkages (PEL) StudiesIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+22 more

TEDSI Infrastructure Group

Houston, TX

TEDSI Infrastructure Group is a traffic and transportation engineering firm dedicated exclusively to traffic and transportation infrastructure improvements, with offices in Houston and Mission, Texas. Its staff brings decades of experience in planning, engineering, design, and implementation across traffic signal systems, roadway and highway design, hydrology and drainage, and intelligent transportation systems.

WebsitePhone2 officesUpdated Jun 2026

Service detail: Transportation Services

Service: Transportation ServicesService: Traffic Engineering and DesignService: Hydrology and Water ResourcesIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+2 more

Tam Consulting Services LLC

Dallas, TX

Nationally Recognized Engineering & Quality Services

WebsitePhone2 offices3 projects5 leaders52 credentialsFounded 2016

Project: TxDOT Southern Gateway Design-Build

Service: Construction Engineering & Inspection (CE&I)Service: Materials Engineering & TestingService: Quality Assurance Program (QAP) Development & OVTIIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+10 more

Tecma Associates, Inc.

Schaumburg, IL

Civil Engineering, Surveying & Construction Management

WebsitePhone2 offices5 projects1 credentialsFounded 1994Updated Jun 2026

Project: IDOT Jane Byrne Interchange Reconstruction

Service: Construction Management and InspectionService: Resident EngineeringService: Phase III Construction EngineeringIndustry: Highways & RoadsIndustry: BridgesType: Civil Engineering+14 more

Thomas Engineering Group, LLC

Oak Park, IL

Delivering Small Firm Service and Expertise with Large Firm Experience and Innovation

WebsitePhone3 offices14 projects9 leaders6 credentialsFounded 2008

Project: Edens Spur Roadway and Bridge Reconstruction

Service: Transportation Planning and DesignService: State-led and locally-led Phase I studiesService: Feasibility studies and alternatives analysesIndustry: GovernmentIndustry: Highways & RoadsType: Civil Engineering+55 more

WMH Corporation, Inc.

San Jose, CA

Client First

WebsitePhone1 office8 projects13 leadersSize Estimate: 50-100 employeesUpdated Jun 2026

Project: Berryessa BART Station Campus

Service: Project Management ServicesService: Design and Construction SchedulingService: Contractual and Funding SupportIndustry: TransportationIndustry: TransitType: Civil Engineering+16 more

infraTECH Engineers & Innovators, LLC

Houston, TX

Designing Infrastructure, Redefining Horizons

WebsitePhone2 offices6 projects1 credentialsSize Estimate: 10-49 employeesUpdated Jun 2026

Project: US 75 Roadway Widening and Reconstruction

Service: Roadway & CivilService: Roadway Schematic DevelopmentService: Roadway and Interchange DesignIndustry: Highways & RoadsIndustry: BridgesType: Civil Engineering+34 more