SC 557 Widening
CALYX is providing planning and design services for a multi-lane widening of this highway just west of the Lake Wylie community in York County. This project is part of the County’s “Pennies for Progress” program to address safety and driving concerns. CALYX developed design year build and no-build peak hour traffic volumes and analyzed existing and future traffic conditions to determine the scope of the project and to identify intersection improvements to provide acceptable operating conditions throughout the life of the project.
CALYX is currently developing alternative alignments to avoid and minimize cultural and environmental impacts. We have also completed the functional roadway design for the project and preparation of the Concept Validation Report. The decision-making process and all impacts will be documented in an Environmental Assessment.