Kyowa Roads Kingsford Smith Drive, Brisbane. Rock bags used in the road widening project Kingsford Smith Drive, Brisbane. Rock bags used in the road widening project Culvert waterways crossing scour protected by rock bags Rock bags provide erosion management for a culvert outlet, and stability for loose riprap Rock bags used as head wall for erosion control Rock bags protect against road erosion on bend Kingsford Smith Drive, Brisbane. Rock bags used in the road widening project Creek Crossing, rock bags stop the crossing from washing out Rock bags used to make a temporary road crossing for road erosion control Imbil Bridge works. Bypass made with LD steel pipe and rock bags Kyowa rock bags used to build temporary river crossings to prevent road erosion Rock bags provide erosion management for a culvert outlet, and stability for loose riprap Subsidence has caused river bank and road to collapse. Rock bags used to stop road erosion The rock filter bags have a life of approx. 50 years in saline water Local stone can be used to fill the mesh bags Rock Bags used on river bank lining Rock Bags to create step piling Culvert headwall made with rock bags for road erosion control Rock bags used to back fill around concrete culvert creek crossing and as headwall