Welcome to the I-85 Corridor Analysis Project Website
The South Carolina Department of Transportation welcomes you to the official Website for the I-85 Corridor Analysis Project in Greenville & Spartanburg Counties.
SCDOT has identified the 22-mile segment of I-85 between US-25 (White Horse Road) in Greenville County and SC-129 (Fort Prince Boulevard) in Spartanburg County in the Department’s Interstate Long-Range plan as a priority capacity need based on adopted ranking criteria. The I-85 Corridor is a vital transportation link between Greenville and Spartanburg locally, as well as between Charlotte and Atlanta regionally. The I-85 Corridor currently experiences a high amount of traffic with a large percentage of trucks utilizing the Greenville-Spartanburg segment. SCDOT is faced with the challenge of resolving the current congestion issues while maintaining I-85 as an efficient and viable multi-modal transportation link for the future.
Project Information
This study will identify ways to reduce congestion and improve traffic flow along the I-85 corridor for present traffic conditions as well as forecasted future traffic.
Traffic analysis, travel demand modeling, corridor geometric evaluations, and identification of strategies will be utilized in determining the plans to improve the congestion along the I-85 corridor.
Current and projected levels of congestion will be measured, travel patterns will be identified, vehicle demand by mode and vehicle type will be investigated, and potential impacts/benefits to adjacent general purpose lanes will be studied.
This corridor study will identify a series of potential projects to improve the I-85 corridor. These projects will be separated into three groups based on estimated construction costs as follows: up to $10 million, between $10 million and $100 million, and over $100 million. The projects will most likely be separated by phases and may involve a combination of various improvement alternatives.
Project Schedule
The I-85 Corridor Study project schedule duration is 12 months. The project officially began in March 2010 and is currently scheduled to be completed by Spring 2011.
Project Progress
Traffic counts were completed at all interchange ramps and all frontage roads at interchanges in April 2010.
Development of a corridor model using VISSIM software is being developed. Suggested strategies for improvements on I-85 will be evaluated using the VISSIM model.
VISSIM model runs are near completions and testing of alternatives/projects are underway and Measures of Effectiveness are being developed for each project.
Draft Report has been started and should be completed by mid-April. Final report to be completed mid-May.
For more information, contact Michael A. Dennis, P.E. Statewide Applications Engineer, Office of Planning, SCDOT (803) 737-1444 in Columbia or through our contact form.
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