Transportation Design

Columbia Engineering offers a robust suite of transportation engineering services to take projects from planning to concept through construction. Columbia’s clients include local municipalities and county/state departments of transportation, many of which are served through demand service contracts.

Columbia has been a demand services consultant for the Gwinnett County and Georgia Departments of Transportation since 1993. Other state DOT experiences include projects with the Alabama and Florida Departments of Transportation.

We team with other engineering disciplines (geotechnical, structural, environmental) to deliver successful projects that maximize value for our clients.

Project Types

  • Limited access interchanges

  • Urban and rural widenings

  • New location roadways

  • Bridge replacement projects

  • Design/Build projects

Services

  • Intersection improvements

  • Roundabouts

  • Pedestrian/bicycle accessibility enhancements

  • Streetscapes

Transportation Planning

Columbia’s transportation planning experience includes a full range of services from project conception through implementation.

Planning services:

  • Feasibility studies

  • Implementation risk analysis

  • Traffic impact studies

  • Corridor studies

  • Regional and comprehensive plans

  • Multimodal studies (bicycles, pedestrians, transit, and the balancing of all modes via Complete Streets programs)

  • Traffic counts

Representative projects