Public engineering firm directory

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Allen Consulting Inc.

Norman, OK

Partner with Leaders in MEP Engineering

WebsitePhone1 office6 projects3 leaders1 credentialsFounded 1979

Project: Francis Tuttle - New Danforth Campus

Service: Mechanical EngineeringService: HVAC DesignService: Central Plant DesignIndustry: EducationIndustry: HealthcareType: MEP+19 more

Applied Ground Support Technical Services, Inc.

Norman, OK

Aerospace Testing Expertise

WebsitePhone1 office1 projectsFounded 2005Size Estimate: 1-10 employeesUpdated Jun 2026

Project: Model BT1000 Electrical Test Console

Service: AFATS ExpertiseService: Aerospace Fuel and Actuator Test Stand DesignService: Hydraulic and Pneumatic Test System EngineeringIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+18 more

Benchmark Construction Services, LLC

Norman, OK

Benchmark Construction Services, LLC is an Oklahoma engineering practice specializing in road and bridge construction management, construction materials testing, utility relocation coordination, resident engineering, and field services. Its Oklahoma team supports transportation infrastructure work from offices and labs in Norman, Tulsa, and Broken Bow.

WebsitePhone4 offices1 projects8 leaders3 credentialsUpdated Jun 2026

Project: Kickapoo Turnpike Utility Relocation

Service: Construction Engineering and InspectionService: Resident engineeringService: Construction inspectionIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+20 more

CEC Corporation

Oklahoma City, OK

Get Stuff Built Right

WebsitePhone8 offices18 leaders4 credentialsFounded 1921Updated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Transportation Design and PlanningService: Bridge Design and InspectionsIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+28 more

Cornerstone Civil Engineering PLLC

Norman, OK

A key stone on the path to success

WebsitePhone1 office1 leaders4 credentialsFounded 2021Updated Jun 2026

Service detail: Pre-Design

Service: Pre-DesignService: Site Assessment / Feasibility StudyService: Due Diligence AssistanceIndustry: CommercialIndustry: RetailType: Civil Engineering+43 more

KSA Engineers Inc

Longview, TX

Dedicated to making life better in communities

WebsitePhone17 offices7 projects3 leaders5 credentialsFounded 1978

Project: Sabine River Water Treatment Facility

Service: Water and Wastewater EngineeringService: Water Treatment Plant DesignService: Wastewater Treatment Plant DesignIndustry: AviationIndustry: AirportsType: Architecture & Engineering+43 more

Larson Design Group, Inc.

Williamsport, PA

National Presence. Hyper-Local Focus.

WebsitePhone18 offices4 leadersFounded 1986Updated Jun 2026

Service detail: Civil Engineering

Service: Architecture & Interior DesignService: Civil EngineeringService: Site/Land DevelopmentIndustry: CommercialIndustry: EducationType: Architecture & Engineering+78 more

Traffic Engineering Consultants, Inc.

Norman, OK

Traffic Engineering Consultants, Inc. (TEC) is a multi-faceted traffic and transportation engineering firm established in 1984. TEC has earned national and international recognition for providing safe, dynamic, and reliable transportation systems that blend all modes of transportation. Headquartered in Norman, Oklahoma, TEC operates additional offices in Tulsa, Oklahoma, Fayetteville and Little Rock, Arkansas, and Springfield, Missouri.

Website5 officesFounded 1984Updated Jun 2026

Service detail: Transportation Planning

Service: Transportation PlanningService: Traffic StudiesService: Transportation DesignIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+1 more