NC DOT Guilford and Randolph Shoulder Reconstruction, High Point, NC
Contractor: Andale Construction, Inc.  
Owner: North Carolina DOT
Engineer: NCDOT Department of Highways, Division 7

When the North Carolina DOT needed to reconstruct a failing asphalt shoulder along the heavily traveled Interstate in Guilford and Randolph Counties, the opted for roller compacted concrete.
This shoulder reconstruction marked the DOT’s first use of RCC and served as a pilot project.

In addition to its use as a structural interstate shoulder and structural edge for the mainline, the shoulder was also expected to carry traffic when interior lanes needed to be closed for full depth patching.

The total project included 14 miles of 10 ft outside shoulder construction, which was expected at least 6 weeks, considering traffic restrictions, weather, and scope of the work. Andale completed the construction in 21 paving days.

This project was so successful that the DOT increased the original contract to install RCC on the 4 ft inside shoulders, as well as the removal and installation of an exit and entrance ramps. In all, the contractor placed 83,000 SY of 8 in. RCC pavement.

The contractor used a specialized trowel, which created a smooth, consistent, and durable surface. In fact, no corrective actions were required on any of the pavement.