Three Valley Gap Remote Avalanche Control Systems
The BC Ministry of Transportation and Infrastructure (BC MoTI) hired Ecora’s project team to design, install, and provide rock fall protection for the first Remote Avalanche Control Systems (RACS) towers in Canada. The towers are located at avalanche start zones up to 500 m above Highway 1 at Three Valley Gap, west of Revelstoke BC. Ecora carried out stability assessments of the rock slopes above and below the tower locations, undertook geotechnical and structural design of the tower foundations, carried out quality control testing on concrete and grout used in construction, and prepared an environmental control plan.
The towers have been used to successfully control avalanches affecting Highway 1 for the 2016-2017 winter season. This system improves highway reliability and reduces highway closure times by allowing BC MoTI to complete avalanche control during all weather conditions and at any time of day or night.