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I-85 Corridor Study 

Georgia DOT and Gwinnett County are partnering to conduct a Comprehensive Corridor Study along I-85. The study area is roughly 18 miles long and is primarily located within Gwinnett County. The study will propose solutions to reduce congestion, enhance traffic operations, and improve safety in this area. Through collaboration with stakeholders and the public, a wide range of potential solutions will be identified. These alternatives will be analyzed and the recommendations will be developed for implementation.


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Planning and Environmental Linkages (PEL)

The study is utilizing FHWA’s Planning and Environmental Linkages (PEL) framework to encourage transportation decision-makers to incorporate environmental considerations, community, and economic goals early in the transportation planning process. Decision-makers can then rely on more robust planning analysis, studies, and decisions throughout project development and during the environmental review processes of transportation projects. PEL aims to create a more unified decision-making process, resulting in less duplication of efforts and more informed project-level decisions.

Study Corridor

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There are up to 340,000 vehicles per day traveling along the busiest part of the corridor.


The average morning congestion in the south-bound direction stretches for approximately 11 miles on weekdays.


This corridor is heavily used by commercial vehicles. Approximately 45% of freight passes through without stopping.

About the Corridor


Miles along I-85




Mainline Travel Lanes in each direction


High-Occupancy Toll (HOT) Lane in each direction


Georgia Department of Transportation
Office of Planning - 5th Floor
600 West Peachtree Street NW
Atlanta, GA 30308

Megan Weiss, AICP, Project Manager
Email: 85study@dot.ga.gov