Abstract:The fuzzy dynamic location-routing problem ( LRP) for post-earthquake multimodal relief delivery was studied. A multi-period programming model for the fuzzy dynamic LRP was developed by considering the following characteristics: fuzzy demand of relief materials, time window constraints, dynamic rehabilitation of affected road networks, stochastic vehicle travel time, demand segmentation strategy employed for the node with great demand, multimodal relief delivery, and split deliveries. The goal was to minimize the total time in relief delivery. A hybrid heuristic algorithm was proposed to solve the model. Finally, the feasibility and validity of the proposed approaches were demonstrated by a numerical example.