NJDOT Statewide Pavement Engineering, New Jersey

Dr. Islam supervises testing activities and provides pavement designs, evaluations, and engineering services. Mohammad plans, directs, and oversees the fieldwork, laboratory tasks, and data collection activities. All applicable activities conform with the 1993 AASHTO guide for the design of pavement structures, FHWA manual; AASHTOWare pavement ME design manual; NJDOT roadway design manual; NJDOT standard items, specifications, and details; and NJDOT's ride quality specification. The activities also involve existing pavement design data, including average annual daily traffic data, heavy truck percentage, and directional distribution. The pavement design data consists of the design service start year; anticipated design service life of the pavement; international roughness index; skid number; collection of pavement and subgrade soil information such as soil mechanics, resilient modulus, and subsurface drainage; and non-destructive field visual distress survey per the strategic highway research program distress identification manual for the long-term pavement performance project. He also conducts field destructive methods to retrieve pavement cores of the existing pavement, subsurface characterization with dynamic cone penetrometer for subgrade below the pavement cores to assess compactness and consistency, and laboratory tests to determine the physical properties of existing sub-grade soil materials, including resilient modulus, and California bearing ratio. Mohammad is assisting with the U.S. Routes 13, 19, 22, 23, 26, 27, 33, 35, 36, 40, 45, 46, 47, 53, 70, 76, 80, 130, 154, 166, 167, 173, 202, 206, and 440. WSP is providing statewide pavement engineering services to NJDOT.