The document discusses the installation of compression seals in approach slabs for bridges. It describes saw cutting a full depth relief joint in the approach slab, preparing the compression seal by cutting it 4 inches deep and applying lubricant adhesive. The compression seal is then installed 3/8 inches below the roadway surface to allow for expansion while preserving the bridge's expansion joints and preventing roadway damage from pressure. The compression seal relieves pressure on the approach slab and provides for roadway growth.