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Carolina Crossroads:
I-20/26/126 Corridor Improvement Project

The South Carolina Department of Transportation (SCDOT), in cooperation with the Federal Highway Administration (FHWA), is proposing improvements to the interstate corridor of I-20/26/126, including the system interchanges at I-20/I-26 and I-26/I-126 in Lexington and Richland Counties. These improvements are proposed to increase mobility and enhance traffic operations by reducing existing traffic congestion within the I-20/26/126 corridor, while accommodating future traffic needs. The corridor's approximately 14 miles of mainline interstate include I-26 from Exit 101 - Broad River Road (US 176) to east of the Saluda River, I-20 from the west of the Saluda River to west of the Broad River, and I-126 from I-26 to east of the interchange with Colonial Life Boulevard. The project website is at

Request for Qualifications

Notice to Proposers Addendum 1 (Posted 03/13/19)
Request for Qualifications Addendum 1 (Posted 03/13/19)
Request for Qualifications (Posted 02/26/19)

Notice to Potential Proposers

Request for Information and Open Forum Meeting Notice (Posted 10/17/18)
Open Forum Meeting Presentation Slides (Posted 12/07/18)
Open Forum Meeting Sign in Sheets (Posted 12/07/18)

Attachment B - Supplemental Project Design Criteria


  1. Draft Quality Assurance Plan (02/26/19)


  1. Figure - Front Slope Definition (02/26/19)


  1. Toe Ditch Detail (02/26/19)
  2. SWPPP Checklist (02/26/19)
  3. Pier and Abutment Setback Detail (10 ft) (02/26/19)


  1. std605-425-01_17_INGRESS (02/26/19)
  2. std605-425-02_17_EGRESS (02/26/19)

Project Information Package


  1. DEIS_July2018 (02/26/19)
  2. Phase I ESAs (02/26/19)
  3. JD Approval Letter (02/26/19)
  4. Supporting CAD Files for August 2018 Public Hearing (03/07/19)


  1. Geotechnical Base Line Report (02/26/19)


  1. SCDHEC Permitting Time Chart (02/26/19)


  1. Structural Inventory and Appraisals (02/26/19)

Statement of Qualifications Evaluation Team Meetings

A Carolina Crossroads SOQ Evaluation Committee Meeting will be held on April 26th, 2019 at 9:00 am at SCDOT Headquarters in Room G-14.
Evaluation Committee Meeting (02/27/19)

Notice to Parties Interested in Providing Design Build Services

Qualifications and/or proposals from any contracting entity must utilize the new ProjectWise electronic proposal submission system. The following information describes the process that teams should follow to access the SCDOT ProjectWise environment for proposal submissions and their respective project data using the new system. Please use this ProjectWise Account Setup & Requirements link to set up accounts.