As a reinforcing method for orthotropic steel decks, the U-rib cutting method has been proposed, in which the welding area between the U-rib and the deck plate is cut and reinforcing plate is installed. However, due to the U-rib cutting, the stress concentration may occur at the deck-transverse rib welds. In this study, two intersection structures were applied to the full-scale test model. Moreover, the static and cyclic loading test was carried out. As a result, in the case of the intersection structure with reinforcing plate on the transverse rib, cracks occurred at the deck-transverse rib welds. For the intersection structure without the plate on the transverse rib, stress concentration occurred at the deck-transverse rib welds, but no fatigue cracks occurred.
