Abstract
The purpose of this paper was to simulate the condition of street blockages caused by great earthquake. In this paper, the condition was estimated by earthquake intensity and street width in the proposed model. The calculated result of proposed model was almost the same as the condition which had been surveyed at previous study caused by Hyougoken-Nanbu earthquake. Furthermore, the calculated result of forecasting the condition of street blockage at center of Yokohama city by Kanto great earthquake and Syouka-Gannen earthquake was showed.