The paper presents a description and results of the investigation on the static work of selected splice and scarf joints. Joints, used in historical structures, are now applied mostly in strengthening or repairs of these objects. In the experimental part beams with different joint types were subjected to bending tests. As a result, load–displacement plots, load-bearing capacities and stiffness levels were obtained and compared with the reference continuous beam. In addition, a numerical analysis was performed to compare the stiffness of the beams with different joints. Analysis of the results, conclusions and some further research directions are presented.