Kyowa Rail gallery Australian rail bridge pylon scour erosion prevented by rockbags Rail bridge in NSW erosion prevented by rockbags, with local vegetation secured in well Australian rail bridge pylon protected by rock bags Culvert crossing using rock bags to manage erosion. Rail Bridge of 'dry' creek bed, rock bags protect the pylons against scour during flash floods Rail bridge in NSW erosion prevented by rock bags, with local vegetation secured in well BEFORE: rail line washed out AFTER: rail line wash out repaired with Kyowa rock bags Rail bridge pylon scour protection Pylon footing protection with rock bags Bridge pylon protected from erosion with rock bags Kyowa rock bags protect bridge pylon.