This paper describes the experimental study of a new hybrid type shear connector for timber-concrete composite systems. The main emphasis of the study is the development and testing of high capacity shear connectors and their use in timber-concrete systems associated with high structural demand for composite interaction such as vehicular and pedestrian bridge structures. Experimental pushout test data of a hybrid shear connector is presented along with the full scale bridge design and testing using this shear connection system. Shear connection consists of two main parts welded together: a circular hollow section (CHS) and a common steel nail plate. The first part is considered a rigid dowel, but the additions of the nail plate considerably improves the redistribution of the shear forces to a larger area of the timber body, thus minimizing the risks of high concentration shear-induced damage locally if only dowel is used. Based on the test results, a single span timber-concrete vehicular bridge design and load-proof aspects are beiefly discussed, includeing factors of different loading effects and construction methods.