Since 1993, TWE has provided a wide range of consulting and testing services for construction projects throughout Texas and Louisiana.


TWE Mission Statement:

To provide the best geotechnical engineering, materials testing and environmental services to our clients by meeting the budgetary and scheduling requirements with the highest ethical and safety standards.

Tolunay-Wong Engineers, Inc. (TWE) was founded by Daniel O. Wong, Ph.D., P.E., to fulfill the need for a premier, multi-disciplinary consulting firm in Houston, Texas. Since our inception in 1993, we have grown from a small staff to hundreds of engineers, scientists, technicians, and support personnel located in offices throughout Texas and Louisiana. What sets TWE apart from other firms is our unparalleled responsiveness to our clients’ needs as well as our innovative and cost-effective project solutions.


Within each of these core service areas, we provide a wide range of consulting and testing services for projects located throughout the Gulf Coast, across the United States, and around the world. Our mission is always to seek out innovative and unique solutions to challenging problems that are not only cost-effective, but fit neatly into our clients’ schedules.

TWE recognizes the benefits of a corporate commitment to employee health and safety, and strives to maintain a culture of safe working practices. It is our policy to provide a safe and healthy workplace for our employees and to observe all state and federal laws and regulations. We are committed to training our employees to follow safe practices and to recognize and correct unsafe working conditions at all times.


Tolunay-Wong Engineers, Inc. won “Best in Class” and “Newcomer of the Year” at the 29th Annual Houston Business Roundtable and Houston Area Safety Council 2016 Safety Excellence Awards. TWE’s comprehensive occupation health and safety program was developed to provide the management systems and support necessary to maintain a safe working environment for all employees, contractors, clients, and the environment which has resulted in an excellent safety record for more than 20 years. The safety of our employees is our highest concern.

Our success is further evidenced by a current ranking of 291 in the Engineering News-Record’s (ENR) 2016 listing of the Top 500 Design Firms, as compared to a 2013 ranking of 460. TWE also achieved a ranking of 7 in the 2015 listing of the Largest Houston-Area Civil and Structural Engineering Firms based on the Houston Business Journal rankings.

Other areas of recognition for TWE include:

  • Recognized in 2008 and 2016 as one of the Houston Business Journal’s Houston Fast 100, a ranking of private businesses making the greatest economic impact on the Houston area.
  • Awarded the 2013 Highways and Bridges Concrete Project Award of Merit by the ACI Louisiana Chapter, for the Interstate-10 Widening Design-Build project (Siegen Lane Interchange to Highland Road Interchange), in recognition of outstanding and innovative use of concrete products.