ESP was selected as a subcontractor to provide quality control inspection for this design-build replacement interchange at US 1 and I-20 in Lexington County, which will demolish the existing interchange. The purpose of the project is to address traffic deficiencies at the interchange, to correct structural deficiencies, to bring the facility up to current standards and to accommodate a future lane in each direction along the interstate.

For this project, ESP’s staff geophysicists provided real-time vibration monitoring services by setting up four remote seismograph stations. These stations sent text alerts to ESP personnel when vibrations exceeded SCDOT limits, allowing us to promptly notify the contractor and SCDOT of any valid events that might affect neighboring structures.