F &R provided geotechnical services in support of the design-build project to widen approximately 19 miles of I-95 in Robeson and Cumberland Counties. The project extended through undeveloped and agricultural properties. The construction began at exit 20, which is NC 211 (N. Roberts Ave), and ended at exit 41, which is NC 59. The project primarily consisted of subsurface investigation and laboratory testing for fifteen (15) bridge sites, ten (10) culverts, and sixteen (16) retaining walls.
F&R managed up to 4 drill crews simultaneously across the project, including two F&R drill crews and coordinated extensive traffic control set ups, including shoulder and lane closures during day and night work. F&R was able to coordinate with a construction company working on an adjacent project to perform some of our work during which lane closures were already in-place across a 2-week period. This coordination saved the NCDOT almost $20,000 in lane closure costs. F&R’s scope of work included performing a total of 220 SPT borings, a total drilling footage of over 10,000 feet. At the completion of the fieldwork, F&R reviewed the field soil classifications and selected approximately 200 samples for geotechnical laboratory testing. Once the field work and laboratory testing had been completed, our geotechnical engineers evaluated the results and provided 30 Structure Inventory reports.
