Abstract
In recent years, the increase of infrastructures has become much important for the economic growth of developing countries. While, lack of budget and low technology in maintenance work make an existing bridge condition very severe with damage due to corrosion. Therefore, it is necessary to design a long-life bridge with low maintenance cost. Especially, in coastal areas, it is important to estimate airborne sea salt behavior around a bridge deck at design step. In this study, behavior of airborne sea salt particles around several types of bridge decks was investigated by wind-tunnel test with PIV technique. In addition, estimation of amount of airborne sea salt was done by a numerical simulation (computation fluid dynamics).