“Box-in-box” method for renewal of modular joints


The mageba “box-in-box” method enables modular expansion joints to be replaced without any impact on the bridge’s structure. The substructure of the existing expansion joint is left in place, and a new joint is installed on top of it, with the support bar boxes of the new joint designed to fit into those of the existing one.


The “box-in-box” method is especially suitable when modular expansion joints are to be replaced with minimum impact on the bridge structure and in the quickest possible time.