Electrical Utility, Civil Engineering, Structural Engineering, and Land Surveying for municipalities, utilities, and developers building the future of Texas.
Most firms our size do one thing. We are a one-stop shop for Electrical Utility, Civil Engineering, Structural Engineering, and Land Surveying so your project moves from raw land to ribbon cutting without delays in handoffs.
Electrical Utility
Substation design
Transmission & distribution facilities
Utility structural support
Standards & coordination
Grid reliability projects
Power plant design (simple cycle)
Civil Engineering
Roadway & paving design
Water & wastewater systems
Storm drainage & floodplain hydraulics
Pedestrian, trail & transit connections
Site development & capital improvement project support
Structural Engineering
Bridge design & inspection
Buildings, foundations & retaining walls
Advanced structural analysis
Shock & vibration analysis
Forensic investigations
Land Surveying
Boundary & topographic surveys
Platting & subdivisions
Construction staking
Right-of-way & easements
ALTA/NSPS surveys
Aerial & terrestrial lidar
General land office documentation
Who We Serve
Built for the people who build communities.
Energy
Electric Utilities & Cooperatives
As part of Rayburn Electric Cooperative, we understand cooperative economics, reliability standards, and the pace of growth in the ERCOT market. Our experience ranges from substations to transmission structures.
Public Sector
Municipalities & Public Works
We are a responsive partner for your capital improvement projects. Senior engineers support every project, including street reconstruction, water system improvements, pedestrian connectivity, and program support across North Texas cities.
Private Sector
Land Development
We support projects from raw land to ribbon cutting with surveying, platting, civil design, drainage, floodplain, and structural services for commercial and residential development throughout the Metroplex.
Our Work
Fifty-five years on the Garland square.
R-Delta Engineers began in 1970, when J. Frank Polma, P.E. opened a structural engineering practice in Garland, Texas. Incorporated in 1972, the firm grew alongside the communities it served — adding civil engineering, electrical engineering, and land surveying to meet the needs of a booming North Texas.
Over five decades, R-Delta earned a reputation for engineering that is practical, thorough, and built to last: roadways and bridges, water, waste water, and drainage systems, public facilities, foundations and retaining structures, floodplain modeling, forensic investigations, and power delivery facilities and simple cycle power generation.
In September 2025, R-Delta joined Rayburn Electric Cooperative, a not-for-profit generation and transmission cooperative headquartered in Rockwall. The acquisition secures the R-Delta legacy for its next fifty years — same team, same downtown Garland home, same mission to serve North Texas.
1970 – The firm is founded
J. Frank Polma, P.E. opens a structural practice in Garland.
1972 – Incorporated
R-Delta Engineers, Inc. is formed.
1980s–90s – Full-service growth
Civil engineering and land surveying join the plan set.
2000s – A municipal and electric cooperative mainstay
Street, utilities, and drainage facilities across Garland, Richardson, Plano, and beyond.
2025 – Joins Rayburn Electric Cooperative
The R-Delta legacy gains cooperative strength and a growing grid-infrastructure pipeline.
Today – The next fifty years
Same square. Same standards. Bigger mission.
Selected Work
A portfolio of experience.
A sample of recent public-sector work across North Texas.
SHT E-101
Power Delivery
Transmission & Substation Engineering
Rayburn Electric Cooperative system
SHT C-101
Roadway Reconstruction
Holford Road, Segment A
City of Garland — PGBT to city limits
SHT C-201
Water Infrastructure
West Pressure Plane Improvements
City of Garland — Phase 1B, Section II
SHT C-301
Pedestrian / Transit
Walks to DART Route Improvements
City of Richardson
SHT C-302
Pedestrian / Transit
Arapaho Station Pedestrian Connection
City of Richardson — DART Red Line
SHT C-102
Roadway / Paving
Brand Road — SH 190 to Muirfield
City of Garland
Clients & Partners
Trusted relationships.
A Rayburn Electric Cooperative Company
Small-firm attention. Cooperative principles.
In 2025, R-Delta joined Rayburn Electric Cooperative — the not-for-profit generation and transmission cooperative serving four Member co-ops across sixteen North Texas counties. Our partnership reflects a shared commitment to respect, integrity, excellence, and innovation in every project we undertake.
For North Texas, it means a fifty-year local firm is here for the next fifty.
Joining Rayburn ensures the R-Delta legacy continues — and connects our work to projects that power and protect Texas communities.
— Frank A. Polma, P.E., CEO, R-Delta Engineers
Careers
Build the infrastructure your community runs on.
At most firms, you're a resource on a spreadsheet. At R-Delta, you're an engineer with a name, a seat at the table, and projects you can point to on the drive home.
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From Start to Finish
Our local work gives team members the opportunity to remain involved from initial planning and design through construction and completion.
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Four disciplines, one roof
Coordinated disciplines help reduce handoff delays and provide streamlined project integration from one phase to the next.
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Cooperative stability
Backed by Rayburn — an innovative G&T cooperative investing for long-term growth and the future needs of North Texas.
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A pipeline that's growing
Grid expansion, ERCOT load growth, and North Texas development mean decades of meaningful work ahead.
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Professional Collaborations
Collaborate with experienced PEs, RELSs, and LSLSs who bring practical, real-world insight to every project.
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Historic Downtown
Garland is a thriving community that values its local businesses and community involvement, centered around a walkable downtown square.
Open Positions
Garland, TX · On-site / Field
Leadership
Meet Frank A. Polma, P.E.
Decades of industry experience and expertise shaping practical solutions, trusted partnerships, and stronger communities.
