Our 43-year history is rich in the design of a variety of projects. From planning and design through inspection services on projects ranging from bridge replacements to complex interchange design, TGS Engineers is proud of its contributions to many communities throughout the southeastern United States. The goal is always to provide efficient and effective designs while keeping the end-user in mind. We strive to balance the functionality with our focus on safety, meeting community needs and environmental stewardship. The team’s expertise covers:

  • Complex Interchanges
  • Interstate Highways
  • Roundabouts
  • Intersection Improvements
  • Roadway Widening
  • Rail to Trail
  • Greenways


The planning team at TGS specializes in National Environmental Policy Act (NEPA) and State Environmental Policy Act (SEPA) compliance and offers services that include conceptual alternative design, community planning and preparation through execution of stakeholder and public meetings.

The TGS planning team has expertise in:

  • Environmental Documentation (CE, EA, EIS, FONSI, ROD)
  • Alternative Design & Evaluation
  • Public Involvement
  • Section 404 Merger Process
  • Community Impact Assessments
  • GIS Mapping & Analysis

Water Resources

TGS has amassed substantial expertise and capability in surface water resources on projects from small storm drainage systems to major highway projects. Our team takes a comprehensive approach to water resource analysis, planning and design to fully satisfy our client's needs, meet regulatory requirements and minimize cost in a timely manner.

  • Bridge/Culvert Design
  • Environmental Permitting
  • Erosion & Sediment Control
  • Existing Drainage Studies
  • Feasibility Studies
  • FEMA Flood Studies
  • Natural Stream Design
  • Small Dam Analysis & Design
  • Stormwater Design

Multi-Modal Design

TGS offers a full range of integrated services for planning and design of roadways, greenways, railways, and bridges. Our engineers are well versed in all elements of roadway design from major interstates and interchanges to rural facilities and railroad track design. This expertise translates into a customizable approach from conceptual through final design.

  • Corridor Location Studies
  • Grade Separations
  • Highway & Interchange Design
  • Urban & Rural Roadway Design
  • Intersection Design
  • Pedestrian/Bicycle Facilities
  • Railway Design
  • Traffic Control
  • Pavement Marking & Signing
  • Utility Design