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Business Details
50+ Years
experience
Your Trusted Partner for Civil Engineering Solutions
Triad Design Group has been a trusted leader in civil engineering and architectural design for over 50 years. Our team specializes in transportation infrastructure, municipal projects, and environmental solutions tailored to Oklahoma's unique needs. In 2020, our partners launched TEIM Design to continue delivering seamless engineering services with the same experienced staff. We prioritize innovative designs that enhance roadway safety, optimize public spaces, and integrate sustainable practices.

Our commitment to client satisfaction has earned us long-standing relationships with cities, counties, and state agencies across Oklahoma. From complex highway interchanges to multi-use trail systems, we combine technical expertise with practical problem-solving to create lasting infrastructure solutions.
Services
Transportation Engineering Infrastructure Design Municipal Projects Environmental Services Architectural Planning
Details
  • Year established: 1970
Highlights and features
  • 50+ years of Oklahoma-focused civil engineering expertise
  • Specialized in transportation infrastructure and municipal projects
  • Same experienced team through TEIM Design partnership
  • Proven track record with state and local government agencies
  • Integrated approach to environmental and structural challenges
Services
Transportation Engineering
We design comprehensive transportation systems including highways, interchanges, and bridges that enhance safety and efficiency. Our expertise covers roadway alignment, traffic flow optimization, and multimodal infrastructure. Projects incorporate stormwater management and ADA compliance while meeting federal and state standards for long-term durability.
Infrastructure Design
Our infrastructure solutions address aging systems through modernization of utilities, drainage, and public facilities. We specialize in grade separation projects like railroad underpasses that eliminate traffic conflicts. Designs integrate multi-use paths and sustainable materials to create resilient community assets that serve growing populations.
Municipal Projects
We partner with cities on comprehensive development initiatives including corridor improvements and public space revitalization. Services cover intersection redesign, water system integration, and roadway expansions that minimize environmental impact. Our team ensures compliance with municipal codes while optimizing functionality for residents and businesses.
Environmental Services
Our environmental engineering addresses stormwater management, erosion control, and ecosystem protection. We develop drainage systems that utilize gravity flow where possible to reduce operational costs. Projects incorporate green infrastructure and regulatory compliance strategies to balance development with ecological stewardship.
Architectural Planning
We create functional, energy-efficient buildings that meet public and private sector needs. Our approach integrates aesthetic considerations with practical requirements for educational facilities, cultural centers, and institutional buildings. Designs emphasize accessibility, safety, and long-term operational efficiency while complementing surrounding environments.
People
Don Douglas
Partner
Civil engineering professional with decades of experience in Oklahoma infrastructure projects, specializing in transportation systems and municipal development.
Joe Davis
Partner/PE
Licensed Professional Engineer leading TEIM Design's engineering services, bringing extensive expertise in structural design and public works projects.
Josh Johnston
Equity Member/PE
Civil engineer with specialized knowledge in municipal infrastructure, focusing on roadway design and stormwater management solutions for Oklahoma communities.
Shay Smith
Equity Member/PE
Professional engineer delivering innovative civil engineering solutions, with particular expertise in transportation projects and environmental compliance initiatives.
Questions
What areas do you serve?
We primarily serve Oklahoma with a focus on Oklahoma City, Edmond, and surrounding counties through our local office.
What project types do you specialize in?
Our expertise includes transportation infrastructure, municipal projects, environmental engineering, and architectural design for public and private clients.
How long have you been in business?
Our professionals have provided engineering services since 1970, with the current TEIM Design partnership established in 2020.
Can you handle complex infrastructure projects?
Yes, we specialize in complex projects like grade-separated railroad crossings and multi-phase roadway improvements with proven technical expertise.
How do you ensure project compliance?
We maintain strict adherence to ODOT standards, municipal codes, and environmental regulations throughout all project phases.