TY - JOUR TT - Case Study: Evaluating Road Performance and Sediment Generation during Simulated Wet Weather Hauling AU - Kemp, Erica AU - Leshchinsky, Ben AU - Boston, Kevin PY - 2016 DA - November JF - European Journal of Forest Engineering JO - Eur J Forest Eng PB - Forest Engineering and Technologies Platform WT - DergiPark SN - 2149-5637 SP - 22 EP - 34 VL - 2 IS - 1 KW - Forest roads KW - Geosynthetics KW - Wet Weather Hauling KW - Oregon N2 - Aggregateroads are the primary means of access to managed forestlands in western Oregon,but may facilitate sediment transport during rainfall, especially with trafficfrom heavy trucks. This transported sediment, typically in the means ofsuspended sediment or turbid effluent, may have detrimental effects on aquaticecosystems, especially when roads are in proximity to creeks, streams andrivers. However, due to past construction practices and difficult terrain, manyexisting roads are stream-adjacent, and may require retrofitting to addresspotential delivery of fine sediment from its surface during rainfall. Toevaluate a potential treatment to this problem, a heavily-instrumented fieldtest was performed on a reconstructed aggregate forest road in Western Oregonwhich sought to test the potential of geosynthetic materials to sequester roadsediment and improve road performance during wet-weather hauling. A sand filterberm wrapped with a non-woven geotextile provided 70% and more reduction inturbidity when tested under idealized laboratory conditions. Additionally, ageogrid reinforcement placed on the native road subgrade material prior toplacing the aggregate layer reduced subgrade pressures experienced during loading,improving mechanical performance. When applied to well-graded aggregate, thegeogrid reinforcement reduced rutting, a potential channel for flow of turbidrunoff. 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