S-472 Blue Slide Road Repair
The Montana Department of Transportation is reconstructing a small section of Blue Slide Road located nine miles west of Thompson Falls that was severely damaged in April 2018. Heavy spring snowmelt combined with heavy rain caused Cougar Creek to overflow and wash out the gravel beneath the pavement on Blue Slide Road.
The project included stabilizing the roadway, evaluating the washout and developing long-term design plans to improve this section of Blue Slide Road. After analysis of the washout and contributing factors, MDT determined that improvements to the culvert at Cougar Creek and realigning the stream would be the best way to address the issues at this location. Construction is anticipated to be completed in fall 2019.
Repaired and Stabilized Roadway
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