Velipoja is considered a seismic region in Albania. In the past years, due to the mountainous landscape and presence of several rivers, in the region of Velipoja have been built different bridges and their maintenance has been insignificant compared to their needs. The recent earthquakes, environmental effects and vehicle loads have damaged the bridges and prompting the need for repairing and strengthening their structure. Replacement with new structures raises financial and technical problems. Rehabilitation of existing bridge is one of the most important actual problems. The main purpose of this paper is to examine the existing structure and to develop design strategies to make the structure as insensitive as possible to the unknown characteristic of the input seismic excitation. The most common technique implemented has been steel jacketing, concrete jackets or composite materials jackets 3 . Fiber-reinforced (FRP) composite materials have been used for external strengthening of concrete structural components 4 . This paper presents some retrofit practices and details used in the bridges of Velipoja region.

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