O'Brien Engineering, Inc. (OEI) is a consulting civil engineering and environmental firm in Dallas, Texas. The Veteran Owned Small Business (VOSB) provides specialization in hydraulics / hydrology / hydrodynamics, floodplain management, dam safety, and regulatory permitting.

Established 25 years ago in 1987,our commitment is to provide the highest possible quality of service in an honest, ethical, cost-effective, and timely manner. We are dedicated to serving our clients.