Bridge Scour Countermeasures

 Stream instability and bridge scour threaten our transportation infrastructure and create costly long-term problems to agencies all over the United States.  Different countermeasures such as rock riprap or concrete have been utilized to mitigate potential scour of bridge piers, abutments and culvert inlets and outlets. In many cases the deployment of a JLSC rock filled system along the stream bed is a superior choice to prevent bridge foundations being undermined by erosion.

Triton® Marine Mattress System

The use of native stone fill and stability of the Tensar® structural geogrid provide a superior long-term solution that is both cost effective and stable. In many cases the use of the Triton® systems can reduce the amount of stone required by up to 67% and the flexibility of the system provides close contact with the native soil providing superior erosion protection. The flexibility of these systems also results in added scour protection at the terminal ends of the mattress with the ability to remain in good contact with the soil even as the underlying bed begins to scour, thus self-adjusting to the changing foundation conditions providing added protection.

Kyowa® Filter Units

Used in conjunction with marine mattresses or as a stand a lone pier protection solution, Filter Units provide a controlled, easy way to deploy rock rip rap around batter piles and round piles that are difficult to get to.  With a single pick point and flexibility of the “rock sack”, the filter units are an ideal product for deploying countermeasures around obstructions at the base of a piling or bridge pier.