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I-85 Corridor Management Plan

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The Corridor Management Plan of Interstate I-85 in Anderson, Greenville and Spartanburg Counties will consider two segments of Interstate I-85 totaling approximately 23 miles. These two segments are from US 29 (Exit 34) in Anderson County to US 25 (Exit 44) in Greenville County and from SC 129 (Exit 68) to just beyond Gossett Road, S-57 (Exit 80) in Spartanburg County as shown on the Study Area Map. This management plan extends both ends of the previous study of I-85 completed in 2012.

The study team's task is to evaluate the existing conditions as a baseline and develop a coordinated, systematic, and planned approach to meet the current and future mobility needs along these two segments of I-85. While the typical transportation study evaluates just the infrastructure components, this study will also include strategies to lessen the travel demand or to shift the demand from the peak periods. The strategies to be evaluated for the study will include:

  • Travel Demand Management
  • Modal Options
  • Travel Operational Improvements
  • Capacity Improvements

The study team will be guided by a steering committee and will receive input from a stakeholder committee. The public will also be invited to participate in the study by providing input and suggestions for improvements through public information meetings and commenting via this webpage. All ideas and suggestions will be evaluated and feasible options will be evaluated utilizing traffic modeling software. This analysis will yield a matrix of strategies and the cost of implementation for both near-term to long-term strategies.

Project Progress

  • The first Steering Committee meeting (view presentation) and the first Stakeholders meeting (view presentation) were held on November 17, 2016.
  • Traffic Counts have been made.
  • The corridor micro-simulation traffic model is under development.
  • Technical Memoranda for the existing conditions of the two interstate segments have been prepared for Utilities, Environmental, and Existing Infrastructure.
To view PDF files, you will need Adobe Acrobat Reader

Study Team

South Carolina Department of Transportation Federal Highway Administration Civil Engineering Consulting Services, Inc. Stantec Michael Baker International

Upcoming Events

  • Public Information Meeting - Tuesday, Jan. 10
    PIM Handout
    Comment Form
  • Public Information Meeting - Thursday, Jan. 12
    PIM Handout
    Comment Form
  • January 10, 2017: A public information meeting will be held from 5:00 P.M. to 7:00 P.M. at the Powdersville High School Cafeteria, 145 Hood Road, Greenville SC 29611 and will focus on the segment of I-85 in Anderson and Greenville Counties.
  • January 12, 2017: A public information meeting will be held from 5:00 PM to 7:00 at the Oakland Elementary School Cafeteria, 151 Mud Creek Road, Inman SC 29349 and will focus on the segment of I-85 in Spartanburg County.

Related Materials

Potential Strategies
Spartanburg Display 1
Spartanburg Display 2
Anderson & Greenville Display 1
Anderson & Greenville Display 2

For more information, contact Kevin Sheppard, PE, SCDOT, System Performance Management Engineer, at (803) 737-1619.

To view PDF files, you will need Adobe Acrobat Reader

Fact Sheet

The I-85 Corridor Management Plan consist of 23 miles of interstate involving two segments of interstate and extends the previous corridor study completed in 2012. The segments of I-85 are:

Anderson-Greenville Counties
From US 29 (Exit 34) in Anderson County to US 25, White Horse Road (Exit 44) in Greenville County

  • Includes six interchanges with non-interstate routes
  • Includes the system-to-system interchange with I-181 (Southern Connector)

Spartanburg County
From SC 129, Fort Prince Blvd. (Exit 68) to just beyond Gossett Road, S-57 (Exit 80) in Spartanburg County

  • Includes seven interchanges with non-interstate routes
  • Includes the system-to-system interchange with I-26

The guiding study principle is the Congestion Management Process utilizing performance measures to identify and evaluate strategies. The study will focus on the following four identified approaches:

  • Travel Demand Management - A series of strategies to reduce the overall travel demand or shift demand out of the peak travel periods (i.e.: Rideshare, Telecommuting, compressed workweek).
  • Modal Strategies - Define opportunities to shift single occupancy trips to transit or truck freight trips to other modes (i.e.: Transit Improvements, Freight Peak-Hour Incentives/Disincentives).
  • Traffic Operational Improvements - Low cost improvements to improve utilization of the existing interstate capacity and improve safety (i.e.: Localized Geometric improvements, Incident Management Improvements).
  • Capacity Improvements - Construction projects developed to add to the capacity of the corridors (i.e.: Interstate Widening, Interchange Upgrades).

The study team will be guided by a Steering Committee of transportation professional from Federal, State, Counties and Municipalities within the study area. A Stakeholder Committee of local business and industry leaders as well as State and Local elected officials will provide input and ideas. The study team will receive input from the public at two (2) public information meetings for each corridor segment where concepts and ideas will be exchanged and the outcome of the study will be presented for comment.

The final deliverable of the project will be a Corridor Management Plan for 2040 with a phased implementation plan based on the cost of the strategies, available funds and congestion reduction benefits.