Expansion of urban areas in Thailand is a main causing traffic congestion. There has been trying to increase traffic routes to support amount of traffic. Meanwhile these requirements demand more land acquired by government to coherent a network. The expropriation is a high cost of an operation. Another way to try is to replace the capacity of a secondary road network. But some secondary roads are not as good shape as purpose. Most of them are road along the canals which often have an erosion of embankment construction. Therefore, it is necessary to improve the capacity of the existing units provide stability and strength to use.