Longpoint Road Interchange Improvements

I-526 Lowcountry Corridor EAST planning studies have identified the need for operational improvements at the Long Point Interchange on I-526 at mile point 28. SCDOT will develop an interchange improvement project to improve operations at this interchange which includes both heavy volumes of commuter traffic and large trucks using this interchange to access the Wando Welch Port terminal. The potential improvement alternatives may include improvements at the Long Point Road Interchange and/or a new interchange alternative.

Request for Qualifications

Notice to Proposers Addendum 2 (Posted 7/1/2025)
Request for Qualifications Addendum 2 (Posted 7/1/2025)
Notice to Proposers Addendum 1 (Posted 6/27/2025)
Request for Qualifications Addendum 1 (Posted 6/27/2025)
Request for Qualifications (Posted 6/13/25)

Notice to Proposers

Early Coordination Advertisement (Posted 12/19/24)
Early Coordination Meeting Presentation (Posted 01/15/25)

Project Information Package

Environmental

Approved EA I-526-Long Point Rd Interchange (Posted 6/13/25)
Long Point Road EA Appendices Combined (Posted 6/13/25)
Approved FONSI Long Point Rd Interchange (Posted 6/13/25)
Long Point Road FONSI Appendices Combined (Posted 6/13/25)
Environmental Compliance Plan Template (Posted 6/13/25)
SAC-2022-01082 Long Point Road Interchange Approved PJD (Posted 6/13/25)
Long Point Rd Interchange Wetland Files (Posted 6/13/25)
Long Point Rd Interchange Signed CALP (Posted 6/13/25)
LPR_NEPA_Reevaluation_Approved (Posted 6/13/25)
Long Point Rd Interchange Permit Application (Posted 6/13/25)

Hydro

Toe-Ditch-Detail (Posted 6/13/25)
SWPPP-Checklist (Posted 6/13/25)
Preliminary Hydro Report (Posted 6/13/25)

Roadway

Conceptual Roadway Plans_Long Point Road (Posted 6/12/25)
Non-Mow Strip Guardrail Details (Posted 6/13/25)
Roadway Typical Sections (Posted 6/13/25)
I-526 Line 3 & Line 6 Configuration Schematic (Posted 6/13/25)

Structures

Rigid Barrier Adjacent to Wall (Posted 6/13/25)
Revisions to SCDOT Seismic Design Specifications for Highway Bridges (Posted 6/13/25)
Post Tensioning Special Provision Requirements (Posted 6/13/25)
Complex Bridge Peer Review Requirements (Posted 6/13/25)
Interior Bent Cap Overhang Details (Posted 6/13/25)
Acceptable Polymer Slurry Systems (Posted 6/13/25)
Noise Barrier Wall Design Criteria (Posted 6/13/25)
Design Criteria for Box Culverts and Box Culvert Extensions (Posted 6/13/25)
Roadway Structure Plan Preparation Requirements (Posted 6/13/25)
Conceptual Bridge Plans (Posted 6/12/25)
SI&A_LongPoint (Posted 6/13/25)

Survey

Long Point Survey Files (Posted 6/13/25)

Traffic

Conceptual Long Point Road Signing Plan (Posted 6/13/25)