Aging bridges of the German federal road network often cannot be rehabilitated or replaced timely due to insufficient funding and complex regulations of building laws. Consequently, novel building materials and alternative solutions get the opportunity to demonstrate their performance. The novel building material UHPFRC was recently used for targeted rehabilitation and strengthening of structures in reinforced concrete leading to increase of service duration. The replacement of the overpass over the federal highway B 27 near Fulda gave the opportunity to cast, under construction site conditions, a layer of UHPFRC on top of the slab for both protective waterproofing and structural resistance functions. This paper reports on the project development, design, tendering and the construction.