A corner connection used to secure I-beams together at corners within the excavation site is provided with a reinforcing assembly that allows for greater loads. Typically, four I-beams are connected together to form a rectangular frame that is suspended within the excavation for bracing the shoring walls thereof; however, any polygonal shape may be used. The corner connection itself comprises mating socket or connecting members that are placed over the ends of I-beams to be fastened together. One of the connecting members includes an outwardly extended tab while the other includes a pair of outwardly extended tabs. The first outwardly extending tab fits between the two extending tabs of the corresponding connecting member. All of the tabs are provided with apertures that are placed in alignment when the connection is made so that a bolt or pin can be passed through the apertures to secure the two connectors together. An additional set of tabs is provided on the connecting members that is also provide with apertures. A reinforcing assembly is provided and includes a reinforcing bar with tabs. A first spacer bar is attached to the reinforcing bar and one connecting member and a second spacer bar is attached to the reinforcing bar and an adjacent connecting member. The spacer bars, the reinforcing bar and the connection members are all connected with tab/pin connections. Advantageously the reinforcing assembly can use the existing second set of tabs located on the prior art connectors. Such an arrangement provides much greater support for the sidewalls of the excavation site.