CLIENT: BC Ministry of Transportation & Transit
PROJECT DESCRIPTION:
PRI was retained by BC MoTT to provide geotechnical engineering services for short-term remedial measures of a slope failure along a section of the westbound lane of the Crowsnest Highway (Highway 3) near Princeton, BC. The affected section is located within the BC MoTT right-of-way and is situated along a ridge between the Tulameen River valley and Similkameen River valley.
CHALLENGE:
Design and construction monitoring of short-term remedial measures of the slope failure
APPROACH:
PRI’s design team undertook short term stability works consisting of the construction of a Hybrid Pinned Slope Mesh and Mechanically Stabilized Earth (MSE) remediation solution and drainage improvements.
OUTCOME:
The construction methodology consisted of drilling and installation of soil nails and end anchors, installation of TECCO slope mesh system, and construction of the MSE slope to form the westbound lane of the highway embankment. Upon completion of the MSE slope construction, the westbound lane road structure and asphalt was reconstructed as per a pavement structural for Highway 3 traffic. The drainage improvements comprised the installation of three catch basins to collect runoff from the asphalt curb and convey it east via a PVC drainage pipe installed beneath the westbound highway shoulder which daylights into a riprap splashpad constructed in the westbound highway ditch.