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US 17 ACE Basin – Segments 1 & 2A Design-Build

SCDOT needed to widen an 8-mile stretch of highway, considered to be one of the nation’s most dangerous two-lane roads. Davis & Floyd was selected to design and build a safer roadway while preserving the ACE Basin.


Davis & Floyd widened the highway and improved safety using medians to minimize head-on collisions, improve drainage, and increase street signage/shoulder safety. The intersection was replaced with a “tear-drop” interchange that saved approximately $5 million for SC taxpayers. Additionally, Davis & Floyd created and managed the US 17 “Widening Your Horizons” campaign to keep stakeholders abreast of project activities via direct contact, project newsletter, and website.

This project was awarded the 2012 ACEC-SC National Finalist & Engineering Excellence Award for the innovative engineering solutions developed by the Davis & Floyd team and coordinated with the SCDOT.

Services Provided

  • Environmental
  • Surveying
  • Transportation Engineering