The intervention entitled Sperrzeit (Barrier) is the connecting element and the common thread of the overall concept. Sperrzeit is a mobile sculpture consisting of three elements based on the prototype of an avalanche snow bridge. Although this object seems out of place in the urban context at first glance, it adds a new level of meaning to the problems connected with the fragmented campus and inner-city traffic (the “metal avalanche”). In the course of recurring “carrying performances”, the three wooden elements of Sperrzeit are moved around on the Türkenschanze Campus. These ponderous processions also cross the streets surrounding the university grounds, thereby inevitably creating an interruption in the flow of traffic. The avalanche barrier becomes a road barrier.