O'Brien Engineering. OEI is a consulting civil engineering company in Dallas, Texas. The Veteran Owned Small Business VOSB supplies specialization in hydraulics and hydrology, floodplain management, and regulatory permitting. Established in 1987, it has always been our mission to supply our customers with the highest standards of service and knowledge possible in a cost effective and timely manner.


Contact Details

  City Dallas , TX
  Zip Code 75254
  Address 14900 Landmark Boulv # 530
  Phone Number (972) 233-2288