Arched constructions were among the most common type of bridges in Europe up until the 19th century. Due to its compressive strength, stone was perfectly suited as a construction material for these structures. Thus, multiple stone arch bridges were constructed throughout history, which nowadays constitute a considerable component of the road and rail transport network. However, the construction standards and the types of use have changed several times since their creation, so that higher loads and new load cases must be considered. Due to the increasing train speed, the impact on the structure as a result of dynamic actions also gained importance. Environmental and long-term actions are particularly important in the case of stone bridges. Due to their old age, historical bridges are endangered by decay. Over the course of their lifespan many of them have withstood extreme environmental actions, which have left their mark on them. Therefore, an extensive structural state recording is always required to de-termine the bridges state of preservation. This Masters Thesis focuses on the impact of different load cases and environmental actions on the load bearing capacity of stone arch bridges. Various, including historical, modeling approaches will be used as a basis for the calculation. A further scope describes different maintenance concepts, going from the in-spection and examination of structures through their repair up to their rehabilitation. Based on the results of this study, measures can be taken to continue to ensure unrestricted use.