This article presents the results of research on composite timber-UHPFRC structures. The findings relate to the proposed method of coupling these materials with regard to the maximum degree of prefabrication. The article contains a proposal of a special method of coupling, specification of used materials, experimental testing and numerical analysis. The results obtained experimentally, by numerical non-linear analysis and the predicted load capacity according to the applicable European standards were compared with each other. The results confirmed the possibility of replacing the experiments by non-linear numerical analysis. It also points out the reserves of TCC assessments of structures according to valid European standards, especially when using UHPFRC.