This area of US 101 at milepost 72.6 in Grays Harbor County is located on a pre-historic landslide. This section of roadway has had long-term settlement leading to repeated and unexpected lane closures. Crews previously have only been able to make temporary roadway repairs, until driving rains retriggered the pre-historic landslide. During summer 2015, crews began the process of making permanent repairs. The repair includes drilling 190 shafts deep into the earth below the lanes of US 101 (left). Workers will fill the shafts with rock, forming a buttress that will shore up the unstable hillside and prevent further roadway settlement. The permanent fix will reduce the potential for slide-related closures and reduce historically-recurring maintenance costs.
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