
ABNA Engineering, Inc.
St. Louis, MOCivil & Structural Engineering, Design Services, General Contracting, and Construction Management
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Civil & Structural Engineering, Design Services, General Contracting, and Construction Management
Collaborative & Innovative

Providing Engineering, Construction, and PM Services to Private and Public Entities

Engineering strength. Building trust.

Engineering Design Technologies (EDT) is a fully integrated engineering and design-build firm founded in 1993 and headquartered in Marietta, Georgia. EDT delivers multi-discipline engineering, architecture, construction, and program management across federal, municipal, commercial, healthcare, aviation, and transportation markets from seven offices spanning the Southeast, Mid-Atlantic, and US Virgin Islands. Its four divisions cover engineering, architecture (EDT-THA), construction (EDT Constructors), and development (EDT Development).

Connecting and Enhancing Communities
Planning, Engineering, Surveying, Landscape Architecture, Development Services

Supporting Your Project Success On Your Timeline
Exceptional, innovative, and comprehensive engineering and contracting solutions

We deliver creative solutions to complex problems
Ultimate Designing Machine

Creating a Modernized Approach to Civil Engineering and Construction for Your Project

Expert Witness & Forensics for the Civil Engineering Industry

Riverside Engineering Inc. is an architecture and engineering firm based in Southern California, led by a principal with 25 years of design-build experience, providing structural engineering, civil engineering, architecture, MEP, fire protection, permit drawing, BIM coordination, and 3D scanning services for complex commercial and industrial properties. Riverside Engineering works in direct coordination with affiliated licensed general contracting firm JDB Builders, enabling real-time remediation analysis, confident cost and timeline ranges, and integrated project delivery from design through construction without shutting down active operations. Serving institutional buyers, commercial landlords, B2B clients, and developers across Southern California and Arizona.

Building Future With Precision
Transforming Vision into Sustainable Realities

The Vision to Transform with Excellence