As a site design firm Columbia Engineering offers the full spectrum of site/civil engineering, including site planning, drainage studies, erosion control and NPDES permitting, cost estimates, and of course, the preparation of preliminary and final engineering construction documents.

Over the past fifteen years Columbia has successfully completed hundreds of projects, including 100+ acre mixed-use land plans, 35 acre-300,000 SF shopping centers, 100,000 SF neighborhood shopping centers and expansions, and many one acre outparcel developments. We also offer site engineering for residential projects, including both multi-family and single family residential.

Columbia Engineering has provided design for transportation projects since 1993. Our scope of services includes public involvement meetings and handouts, conceptual plans, preliminary construction plans, final right-of-way plans and final construction plans. We have a committed staff of professionals that strive to complete projects on time, within budget, with minimal construction costs. Columbia provides demand service engineering to the Gwinnett Department of Transportation for Traffic Engineering, Minor Roads and Pedestrian/Bikeway Improvement Design Services. We are prequalified with the Georgia Department of Transportation in the following categories for Highway Design Roadway:

1. 3.01 Two-lane or Multi-lane Rural generally free access Highway Design
2. 3.02 Two-lane or Multi-lane with Curb and Gutter generally free access Highways Design including Storm Sewers
3. 3.03 Two-lane or Multi-lane Widening and Reconstruction with Curb, Gutter and Storm Sewers in heavily developed Commercial, Industrial and Residential Urban Areas
4. 3.06 Traffic Operations Studies
5. 3.08 Landscape Architecture
6. 3.12 Hydraulic & Hydrological Studies (Roadway)
7. 3.13 Facilities for Bicycles & Pedestrians
8. 5.01 Land Surveying
9. 5.02 Engineering Surveying
10. 9.01 Erosion, Sedimentation and Pollution Control and Comprehensive Monitoring Program

Our landscape architects are experienced in producing conceptual layouts to maximize expected yield for both commercial and residential projects. We provide rezoning assistance for both proposed and current zoning. Our landscape architecture plans provide both hardscape and softscape, featuring low maintenance plants that offer year round interest. We are also able to produce designs that feature native plants for parks and nature gardens.

Our staff has over 80 years of surveying experience. We offer a full spectrum of surveying services, including asbuilt, residential, commercial, topographic, route and profile, location, ALTA/ACSM land title, construction layout, boundary, aerial control surveys, GPS services, construction and right-of-way staking, and roadway databases.