Case Study
Highway 290, South Carolina Roadway Project
Problem Highway 290 abuts an environmentally sensitive area known for its small ponds, gentle waterfalls, herds of deer and a piedmont stream. Piedmont streams typically meander across their flood plains and move with time often forming oxbows–u-shaped bends in the streams. Oxbows can eventually be cut off by excessive sedimentation, creating oxbow lakes or ponds. Contractors also had to create a bridge across this piedmont stream – a tri