Find engineering consulting firms by capability and location.

360 Engineering Group is a structural engineering firm with offices in Tulsa and Oklahoma City, Oklahoma, Manhattan, Kansas, and Dallas, Texas, holding professional engineer licenses in 49 states and Washington D.C. Its licensed engineers deliver structural design and analysis, BIM coordination, structural evaluation and rehabilitation, shop drawing preparation, peer reviews, and expert witness services for a broad range of building types and market sectors.

Project: Block 34

Engineering Innovators

Project: SH 130

It's not just business...it's personal.

Project: Route 66 Bridge

Inspired and purposeful designs to enhance and connect communities.

Project: Rogers County Courthouse

We are problem solvers with sustainable solutions to complex challenges

Project: Springinsguth Stream Corridor Restoration

Get Stuff Built Right

Service detail: Transportation Engineering

Engineering Judgment. Proven at Every Scale.

Service detail: Structural Engineering

It's Relationships We Build

Project: U.S. Pentagon

Storage Tank Inspection, Corrosion Engineering & Tank Design

Service detail: Storage Tank and Corrosion Engineering

Forging Critical Infrastructure That Lasts.

Service detail: Structural Engineering

Engineering safe and lasting infrastructure solutions for our communities

Project: Bridge 45 Wolf Creek

Exceptional design. Extraordinary service.

Project: Stillwater Public Schools Softball Field Reconstruction

Realize the Difference

Project: Boeing High-Bay Research Facility

Guinn Structural, LLC is a structural engineering consulting firm founded in 2021 and based in Broken Arrow, Oklahoma. Patricia Guinn, PE, provides structural engineering services directly to clients, with over thirteen years of experience. Services specialize in residential, multifamily, and commercial new builds, with niche expertise in custom combustion equipment, pressure vessels, and aluminum storefront and curtain wall systems. Guinn Structural holds PE licenses in Oklahoma and eleven other states.

Service detail: Wood Framing Plans

A Proven Leader in Utility Engineering

Service detail: Electrical Utility Infrastructure Design

Designing building systems that enhance the quality of life

Service detail: MEP Engineering

Engineering Success

Project: Topgolf

Holtzen Engineering Group P.C. is a civil and structural engineering practice serving architects, owners, and municipalities across Oklahoma and surrounding states. Holtzen Engineering Group provides structural design for residential, commercial, institutional, and government buildings, as well as civil engineering services focused on land development, site utilities, drainage, and roadway improvements. Primary service territory for land development spans Northwestern and North Central Oklahoma from Woodward to Stillwater and from Oklahoma City to the Kansas border.

Service detail: Structural Engineering

National Presence. Hyper-Local Focus.

Service detail: Civil Engineering

Level Engineering and Architecture is a multidisciplinary civil and structural engineering and architecture firm headquartered in Loveland, Colorado, with 12 offices across 7 states. It serves homeowners, commercial building owners, contractors, developers, and local government clients with structural engineering, civil engineering, architecture, and inspection services. With over 25,000 projects completed and 500+ five-star reviews, Level provides stamped drawings and signed plans for permitting, structural inspections, load-bearing assessments, foundation engineering, and forensic reports. Civil services include hydraulic engineering, drainage engineering, water and wastewater, and bridge engineering.

Service detail: Structural Engineering

Engineering, Architecture, Geospatial.

Project: Frozen Food Production Facility Master Planning

Engineering trust.

Project: Baylor Scott & White Medical Center and Clinic in Pflugerville

Creating Value for Global Customers Through Real-World Engineering.

Service detail: Mechanical Engineering and Evaluation

Providing inventive architecture and engineering solutions for a better future

Service detail: Architecture and Planning