The Public Works, Ports and Inland Water Transport Department maintains a road network of about 76060 Kms of in the state of Karnataka. Out of the total road network, a length of about 25000 Kms of roads are declared as Core Road network which includes the National Highways, State Highways and some important Major District Roads. The functional condition data which includes roughness in IRI, rut depth surface distress like cracking, raveling, patching including geometric characteristics are collected using a laser based Road Condition Data Collection Vehicle (RCDCV). The structural condition of the pavement has been determined using a Falling Weight Deflectometer (FWD). The maintenance and rehabilitation history is obtained by the Road Information System of the Department.
The maintenance and works budgeting for the Core Road Network is prepared by the Department utilizing the data collected as described above. The data collected is analyzed in Karnataka Road Asset Management System and the Annual Works Program (AWP) for the Core Road Network is prepared by the Department. The entire Core Road network is divided into number of homogenous sections, as they contain varied traffic conditions.
The output of the analysis includes the change in deterioration of the pavement on application of different maintenance and rehabilitation strategy. Different budget constraints are defined and a budget optimization is carried out in HDM–4, to obtain an optimum alternative for the maintenance and rehabilitation of the sections in the network.