CDG Engineers, Inc.

Engineering a better way.

Website

About the firm

CDG Engineers, Inc. is a multi-discipline engineering practice founded in 1992 as a reorganization of Neal J. Campbell Consulting Engineers, originally established in 1941. Headquartered in St. Louis, Missouri, CDG delivers architectural, civil, electrical, mechanical, mining, and structural engineering services from four offices across the Midwest and Eastern U.S. to clients in the utilities, government, industrial, mining, infrastructure, and renewable energy sectors. In 2025, CDG reached a milestone of more than 100 employees.

Established
1992
Team
Midsize
Firm type
Civil Engineering · Structural Engineering · Electrical Engineering · Mechanical Engineering · Mining Engineering · Architecture & Engineering

People

Jay EllingtonPresident

Capabilities

Architectural Engineering

Service website

Provides architectural engineering as part of CDG's multi-discipline design practice.

Civil Engineering

Service website
  • Flood Protection

Electrical Engineering

Service website
  • Distribution Systems
  • Transmission Line Design
  • Arc Flash Studies

Mechanical Engineering

Service website

Provides mechanical engineering for industrial, infrastructure, and facility design work.

Mining Engineering

Service website

Provides mining engineering services within CDG's listed engineering disciplines.

Structural Engineering

Service website
  • Foundation Design

Industries

Utilities · Electric Utilities · Power Transmission & Distribution · Government · Industrial · Mining · Infrastructure · Renewable Energy · Wastewater · Stormwater & Flood Control · Highways & Roads

Projects

Cedar Rapids Reach 1 Flood Protection

Cedar Rapids, IA · Stormwater & Flood Control · 2025

Project details

Design and delivery of flood protection infrastructure for the first section of the Cedar Rapids Reach 1 project, completed in 2025.

MSD Project Clear - SPB Foundation Design

St. Louis, MO · Wastewater · 2025 · Client: Metropolitan St. Louis Sewer District

Project details

Foundation design for the Metropolitan St. Louis Sewer District's Project Clear infrastructure program.