This diploma thesis is focused on the subject of bridges. Therefore, the underlying physical elements, the topic of bridge construction in an educational context and what makes a bridge actually stable are dealt with in further detail. The topic of bridges was coped with in such a way that it can be used by teachers in secondary school.The thesis is divided into two major parts. The first one should provide teachers with the fundamental physical knowledge concerning bridges. Hence, the physical backgrounds are explored and explained in more detail. Moreover, several kinds of different bridges are illustrated and their features and characteristics differentiated respectively. The second part of the thesis includes the subject- related preparation of the physical input for the educational context in secondary schools. Based on the Austrian Curriculum for Physics, the topic of bridges is allocated to various levels of education. Depending on whether the topic is taught in lower or upper secondary school, different ideas in order to convey the physical background of bridges are presented. For this purpose, developed materials and experiments which teachers can resort to are attached as well.The aim of this thesis was, therefore, to establish material in the context of bridges which should support teachers to convey and teach this topic in school. The reader of the thesis should receive an insight into the historical development of bridge construction, as well as into essential information and crucial features of various types of bridges. For this reason, the basics of physical laws with respect to bridges and subject- related knowledge is also involved. Furthermore, material and methods for teaching with regard to this specific topic are included.