The S‑75/Cherokee Road Bridge Replacement project in Anderson County, South Carolina, addressed a structurally deficient 1957 bridge carrying S‑75 over US 29, a major freight and regional mobility corridor. With low vertical clearance and outdated structural conditions, the bridge no longer met current standards, creating safety concerns for large trucks and limiting reliable movement for residents and commercial traffic. STV provided turnkey services to replace the aging structure and upgrade roadway connections, enhancing safety and supporting future economic growth in the region.
What challenges did STV address?
The existing bridge lacked adequate vertical clearance for modern freight traffic and was identified by the South Carolina Department of Transportation as structurally deficient. The project required meeting current geometric, safety and loading standards while minimizing impacts to nearby wetlands and right‑of‑way. STV also needed to analyze traffic operations, upgrade ramps and integrate a safer intersection solution to reduce congestion in a largely rural setting.
What solutions did STV deliver?
STV provided full planning, engineering and construction phase services including traffic analysis, alternative concept evaluation, roadway and bridge design, drainage improvements, environmental permitting and utility coordination. The final design introduced a new single‑span bridge, improved exit and entrance ramps and mechanically stabilized earth retaining walls. A modern roundabout was added at an adjacent intersection – a less common choice for rural areas – to reduce environmental impacts, improve safety and offer a more economical option.
How does this project benefit the community?
The completed bridge and roadway improvements enhance safe travel, reduce delays and accommodate larger freight vehicles that support regional commerce. The roundabout reduces crash potential and eases congestion, while the new bridge ensures long-term reliability for residents, emergency responders and commercial traffic.
Key stats and accolades
- Replacement of a 1957 structurally deficient bridge
- New single‑span structure with improved vertical clearance
- Roundabout added to reduce congestion and enhance safety
- MSE retaining walls supporting ramp improvements
- ACEC South Carolina engineering excellence award
