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O’Brien Engineering, Inc. (OEI) provides transparency whenever possible on all of our past projects, to include A/E design, engineering, water resources, and more. Contact us to discuss your project. We’re happy to connect you with past clients who can speak to our firm’s adherence to budget, timeline, streamlined processes, and regulatory compliance coordination.

A/E Design

OEI provides full A/E design services for our clients. This full surgical suite renovation project at the Olin E. Teague VA Medical Center in Temple, TX, is a testament to our ability to provide federal sector clients with the architectural and engineering technical expertise and quality workmanship for which OEI is known.


This 3D computer-aided design interior rendering is just one example of how OEI makes architectural design projects relevant, enabling clients to visualize completed interiors and exteriors.

Bank Stabilization and Erosion Control

OEI has completed successful streambank/creekbank stabilization, slope stabilization, and erosion control projects for clients including the Texas cities of Plano, Dallas, Coppell, and Farmers Branch, as well as on federal facilities for USACE and the VA.

Construction Phase Services & Administration

OEI provides construction phase services, construction management, construction administration, and construction surveillance services for federal, municipal, and private clients completing vertical and horizontal projects.

Dam and Levee Safety

OEI provides inspections and rehabilitation design for a variety of private, municipal, state, and federal clients. We’ve completed these projects for the Texas Army National Guard, the U.S. Army Corps of Engineers, the U.S. Forest Service, many municipalities, and private land owners.

Emergency Response & Flood Damage Assessments

OEI’s team includes experts trained and ready to deploy for disaster and flood damage assessments for FEMA and North Texas municipalities.

Environmental Design

Owing to our commitment to provide lasting and sustainable solutions for public and private sector clients, OEI provides environmental engineering, design, permitting support, and tracking for projects such as golf courses, landfills, dams, and more.

Facility Condition Assessments

A testament to OEI’s ability to coordinate multi-jurisdictional projects efficiently, OEI has provided facility condition assessments for clients such as the U.S. Army Corps of Engineers (USACE) and Customs and Border Protection (CBP) throughout the U.S. and abroad.

FEMA: Coordination, Permitting, Grant Reviews

OEI is a recognized expert partner on projects that require coordination with or approval from the Federal Emergency Management Agency. We work with clients whose projects require FEMA involvement, while also directly providing FEMA with grant reviews, damage assessments after disasters, and flood map modernizations.

Flood Reports, Studies, and Analyses

OEI’s expertise when studying surface water problems is unsurpassed in the industry. We design solutions and plans for flood plain mitigation for a variety of private, municipal, state, and federal clients. One such project was the development of an after-action flood report for the U.S. Army Corps of Engineers following historic flooding in 2015 and 2016.

GIS Mapping

Applicable to nearly every one of OEI’s water resources projects, GIS mapping and database development is an efficient process we’ve used to address flood map modernizations for FEMA in several Texas counties.

Hydraulic, Hydrologic, Hydrodynamics

With more than three decades of water expertise, OEI has expanded upon that original specialization to develop a core competency providing complex hydraulic, hydrologic, and hydrodynamic modeling, analysis, and design. We have served a broad range of public and private sector clients in these areas, both nationally and outside of the continental U.S.

MEP Design

OEI’s engineers provide detailed studies and schematics of a building’s “nerve center” prior to implementation. Our engineers find efficiencies and creative solutions to provide a comfortable building space with thoughtful mechanical, electrical, and plumbing layouts that best serve the building’s purposes and inhabitants.

Paving and Drainage

OEI has provided pavement and drainage designs and construction phase services for clients including Overton Brooks VA Medical Center in Shreveport, LA, and the Corpus Christi VA Outpatient Clinic in Corpus Christi, TX.


Real Estate

Our multidiscipline services for real estate development and design projects have saved significant time and money for public and private sector clients throughout the years.

Water System Upgrades

This Southern Arizona VA Health Care System water system upgrade and San Antonio Water Softener Upgrades are examples of OEI’s water system analysis and upgrade design capabilities.