TANG ROAD MONITORING

 BREMERTON, WA

Art Anderson was contracted by Lockheed Martin to perform a follow up geotechnical investigation of the surrounding areas of a sink hole that was patched over at Naval Base Kitsap Bangor on Tang Road, the access road for the Explosive Handling Wharf -1. The purpose of this investigation was to analyze any issues that could impact continued use of the road, evaluate risk mitigation for the potential issues and make recommendations for roadway life extension. Krazan & Associates assisted with the geotechnical survey to help determine what was causing the sinkhole and if any of the surrounding areas were having the same issues that would cause another hole along the road. As this is a majorly used road on base, finding the cause of the sink hole and ways to prevent another from occurring were critical. After inspection, Krazan found the cause of the sinkhole was from the erosion of loose fill materials by uncontrolled storm water runoff and vibrations from traffic on Tang Road. To reduce the probability of future sinkholes in that area, they recommended the existing fill material be completely removed down to the firm natural ground and be brought back up with structural fill, properly placed on horizontal benches and compacted with the structural fill.