The Fort Mill Southern Bypass was developed to improve mobility and accessibility in southeastern Fort Mill and eastern York County by creating a new transportation corridor that relieves congestion on local roadways. The completed project delivers a new seven-mile, two-lane roadway (including side roads) that connects the eastern terminus of the Southern Bypass to the Fort Mill Northern Bypass, strengthening regional connectivity and supporting continued growth in one of South Carolina’s fastest-growing communities.
What challenges did STV address?
Delivering the bypass required navigating complex environmental, regulatory and infrastructure constraints. The corridor crossed sensitive natural resources and a major freight rail line, requiring extensive environmental documentation, permitting and agency coordination. STV coordinated with the Federal Highway Administration, U.S. Fish and Wildlife Service and U.S. Army Corps of Engineers to facilitate protected species relocation and Clean Water Act Section 404 permitting. In parallel, the project demanded detailed traffic analysis across 15 intersections and long-term right-of-way planning to accommodate future growth.
What solutions did STV deliver?
STV provided turnkey project management and full design services, including roadway and bridge design, environmental mitigation, cost estimating, bid document development and construction-phase support. The scope included design of a four-span, 476-foot steel plate girder bridge over Norfolk Southern Railway and Banks Road, engineered to accommodate future widening. STV also completed natural resource investigations, biological assessments, railroad crossing studies and public engagement activities to advance the project efficiently from concept through completion.
How does the Fort Mill Southern Bypass benefit the community?
The completed bypass improves traffic flow, enhances safety and provides a reliable alternative route for residents, commuters and freight. By planning for future expansion and integrating environmental stewardship, the project supports sustainable growth while improving quality of life and economic vitality across Fort Mill and York County.
Key stats and accolades
- 7-mile new roadway improving regional accessibility
- Includes 476-ft bridge over Norfolk Southern Railway
- Designed for future widening to support long-term growth
- ASCE South Carolina Project of the Year
