Estimation of Reconstruction Cost and Traffic Functionality Relating to Roadway Transportation Lifelines after Natural Disasters

Earthquakes are among those natural hazards which may lead to disruption in the function of arterialtraffic routes. road networks are particularly vulnerable, due to their geographical dispersion,extensive functions and structural reliance on favourable geophysical conditions. traffic functionalityafter a natural disaster and the repair/rehabilitation cost of roads are crucial considerations inplanning the best priority recovery scenario. in the current paper, the primary focus is placed onthe method for evaluating the costs of damage to the roadway network following an earthquake.bridges, pavements, tunnels and base layers are assumed to be the main elements of a roadwaystructure. through this approach, the level of damage can be specified for each component ofthe roadway. the repair/rehabilitation cost pattern can then be generated according to the levelof damage, and the entire reconstruction costs can be calculated according to the total damagedsurface area of each route. finally, the total damage cost of roadways can be provided by consideringthe likely duration of the rehabilitation period, and determining the performance reduction intraffic flow caused by the damaged components. secondly this paper demonstrates a method ofmeasuring roadways’ functional performance. this method, based on path dividing and considerationof the attachment of sections leads to more precise feedback on roadways’ functionality.this is calculated by computing the width of sections in a route that remain undamaged and whichretain the ability to sustain traffic flow. in this way, traffic flow and the linkage of sections can bedetermined as functions of road capacity.