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Power Your Next Move With

Established in 1993, Tolunay-Wong Engineers, Inc. (TWE) is one of the largest geosciences consulting firms in the Gulf Coast Region. Our offices are located across Texas and Louisiana.  We are driven by our 300+ employees who have a shared sense of creativity and humility and a desire to have a positive impact on the world.



Deliver Incredible Together

Geotechnical Engineering

With a history of saving our clients millions of dollars, our highly regarded engineering staff evaluate subsurface conditions to develop foundation and site development recommendations for planned construction through engineering, subsurface exploration, and laboratory testing. Our core areas of expertise include but are not limited to:

  • LNG plants, petrochemical, landfills, pipelines, levees

  • Commercial Development, universities, and hospitals

  • Transportation highways, roads, bridges



Construction Materials Testing

Our CMT Division produces thousands of individual reports annually for various laboratory tests and field inspection of construction materials. Most of these involve concrete, aggregates, soils in-place, and bituminous materials. Also, we regularly test brick, granite, stone masonry, mortar, and manufactured elements, such as prestressed beams and precast panels.

Geophysical Services

We possess a wide array of engineering applications to conduct near-surface geophysical explorations, such as locating underground voids, utilities, tanks, piping, potential hazards, geologic features, and anomalies, to enhance your construction projects.

Environmental Field Services

Whether it is consulting or field services for “soft” natural resource management and regulatory analysis projects or “hard” hazardous materials management projects, we have the staff and equipment resources to execute projects that support our clients’ environmental compliance initiatives.

Deep Foundations Testing

Specialized in using Pile Driving Analyzer, Case Pile Wave Analysis, & wave equation analysis (GRLWEAP) to evaluate static axialpile capacity and integrity, and provide complete driven pile deep foundation testing programs for projects of any scope and foundation type.  We also provide drivability & constructability studies, and inspector charts to evaluate the most efficient hammer systems and ensure proper driven pile installations.  


We are leading the industry to superior safety standards and implementing cost-effective solutions with revolutionary engineering designs.

TWE operates a full service drilling operation and state of the art equipment allows us to deliver agile support.

Our regions maintain an extensive fleet of CPT and geotechnical drilling equipment capable of scaling to clients' project needs and maintaining our safety standards.

“Best in Class” at the 29th Annual Houston Business Roundtable; Houston Area Safety Council Safety Excellence Awards; Compliant with ASTM E-329, ISO IEC Guide 17025 and NQA-1 quality

Awarded the "ExxonMobil Contractor Safety Program and ZERO Injuries"


Award-Winning Safety Record

Certified Lab Testing

In-house Fleet


Texas Department of Transportation; American Association for Lab Testing; US Army Corps of Engineers; AASHTO Materials Reference Lab Standards


Local leadership.

Personal Approach.


At TWE, we value our local partnerships and focus on delivering the best value for clients. In order to accomplish this, we carefully curate and establish a long-term local presence at each of our branches supported by local engineers with access to all of our resources company-wide.

Relentlessly innovative by nature, our accomplished professional staff includes former university professors, industry veterans, and project engineers who work with startups, small-mid sized clients, and Fortune 500 firms everyday. Leveraging decades of industry experience, our executive engineering team provides expert leadership to the TWE team and long term value for our clients.

Our Approach