Lewis Road Pavement Design and Rehabilitation, Camarillo, California
The Lewis Road Widening Project includes widening Lewis Road from the California State University Channel Islands entrance northward to Pleasant Valley Road, a distance of about 3 kilometers. The project includes design of a new two-lane road west of the existing two-lane road and reconfiguration of the existing crowned roadway section for single-direction (northbound) travel. Evaluation, design, and reconfiguration of the existing two-lane roadway are critical components of the project.

For the new roadway, Fugro performed pavement deflection testing, and drilled and sampled eight shallow hollow-stem-auger drill holes to depths of about 5 feet to help evaluate the subsurface conditions along the length of the proposed two-lane road section west of the existing road. For the existing roadway, a Fugro engineer performed a pavement evaluation survey. Nondestructive deflection testing was performed at a spacing of 30 meters in both lanes of the existing roadway. A laboratory testing program was performed to characterize the engineering parameters of the earth materials. Pavement materials sampling operations consisted of six borings to about 2 meters in depth along the existing roadway at locations specified by the pavement engineer.

Using the pavement condition survey, non-destructive deflection testing data, and laboratory tests, the existing roadway was analyzed to identify those areas that respond differently to loads. Structural evaluations of the deflection data will be made to assess the pavement's current adequacy and estimate the structural requirements for a flexible pavement with projected traffic levels.