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972-233-2288 info@obrieneng.com

Founded in 1987, OEI’s first municipal client was the City of Farmers Branch; over thirty years later, OEI continues to serve the City and are, indeed, currently providing services on three projects. This longevity clearly demonstrates our determination to serve our clients with the future in mind. We seek long-term relationships and are confident that the quality of our work will be evident for decades.

As a result, OEI serves numerous municipal clients throughout North Texas as well as in other parts of Texas and Arizona providing hydraulic / hydrologic / hydrodynamic modeling and analysis, mechanical / electrical / plumbing engineering design and analysis, civil engineering, real estate support services, and program management, OEI maintains a top-down commitment to defining the problem and meeting the need.

OEI is a certified State of State HUB firm, TxDOT Small Business Enterprise (SBE), and maintains TxDOT certifications.

  • Using BUILDER
  • Replacement budget planning
  • Full A/E design (new, replacement, rehabilitation)
  • Facility Condition Assessments
  • Construction Phase Services
  • Design Build RFP development
  • Project Management
  • Full Design
  • Analysis
  • Forensics
  • Civil
  • MEP
  • Floodplain administration
  • Development plan reviews
  • RFI’s and shop drawing review
  • Construction observation
  • Contractor estimate review
  • Surface water
  • Modeling
  • Analysis
  • 1D, 2D
  • Rehabilitation
  • Inspections
  • Evaluations
  • Breach Analyses
  • Inundation Mapping
  • Civil
  • Water Resources
  • MEP
  • Master Drainage Studies
  • Complex Drainage Analyses
  • Drainage Remediation/Design
  • Writing Drainage Ordinances
  • Detention/Retention Analyses and Designs
  • Management
  • Reclamation
  • Administration
  • Permitting
  • Writing Ordinances
  • Design
  • Constructability
  • Modeling
  • Basin wide erosion studies
  • Bank stabilization design
  • Studies
  • Design considerations
  • Sustainability
  • Pavement reconstruction
  • Utility replacement design
  • Drainage analysis/design
  • Storm sewer analysis/condition assessment
  • Detention/retention design
  • Water distribution line replacement
  • Wastewater collection replacement/rehabilitation
  • Mapping
  • Database management
  • Database development
  • Commercial
  • Retail
  • Residential (Design and Permit)
  • Due Diligence
  • Land Research
  • Mapping
  • Title run services
  • Title search services
  • ROW
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