This project was located on the 151 Bypass in Fond du Lac, Wisconsin. The construction of a bridge overpass involved mounding up fill to create a ramp that leads to the bridge.
As traffic passes on this bridge, the vibration of the traffic caused the fill to settle. Even though rebar was installed to hold the deck level with the approach, it can bend without any support from below.
A sand-based, Portland cement infused slurry was used to support the bridge approach and raise it back to level. More commonly, these types of projects are calling for polyurethane material to be used, because the lightweight material will not lose density, and adds less weight than mudjacking material.