Demolition, site work, paving and new construction of a civil project in Lexington, South Carolina. Conceptual plans call for the demolition of a bridge / tunnel; for the construction of a bridge / tunnel; for site work for a bridge / tunnel; for paving for a bridge / tunnel; road / highway; and road / highway.

The project is in the planning stages. The owner will use Design-Build procurement. A request for information was issued by the owner in April 2026. Q3 2026 – Request for Qualifications Q4 2026 – Announcement of Short-listed Teams and Request for Proposals for Industry Review Q1 2027 – Final Request for Proposals Q3 2027 – Public Announcement Phase 3D is in conceptual stages. Overall project completion in the 2030s. An RFQ was issued on 10/2/25 but was cancelled on 11/7/25. According to procurement notes, the cancellation was due to scope adjustments and funding alignment issues—essentially, the project team needed to revise design-build requirements and schedule before moving forward. Expected to re-issue mid-late 2026. 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 SCDOT Carolina Crossroads. Phase 3D consists of the reconstruction of the I-26 at I-126 system interchange including the replacement of bridges within the interchange and the I-26 mainline bridge over the Saluda River. This improvement is in preparation for the I-20 at I-26 system interchange improvement to be completed by later project phases. SCDOT: Carolina Crossroads Phase 3D - I-26/126 System Interchange *Project information has been obtained through a public state transportation improvement plan (STIP). A STIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the STIP often evolves based on funding availability. The project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.