SLOPE STABILIZATION AT KM 229 AND KM 701-703 OF THE ALASKA HIGHWAY: SITE CHALLENGES AND LESSONS LEARNED
Jason Pellett, Andrew Horwood
In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost ConferenceSession: Infrastructure Performance in Cold Regions II / Performance des infrastructures en régions nordiques II
ABSTRACT: The Alaska Highway (BC No. 97) traverses numerous areas of difficult, landslide-prone terrain across northern BC and the Yukon. Public Works and Government Services Canada retained Tetra Tech EBA Inc. to evaluate unstable slopes at km 229 and km 701-703 and to complete the design of stabilization works. At km 229, slope movements were occurring along a very weak sliding plane in glaciolacustrine clay. Stabilization works included a cut-off drain along the ditch and a series of counterfort drains below the road. Follow-up monitoring suggests the slope movements have slowed but not stopped. At km 701-703, three sections of the highway along the eastern shore of Muncho Lake had a dangerously narrow shoulder due to erosion and slumping of the shoulder material into the lake. Stabilization of these areas was successfully completed using wire-basket MSE walls. This paper discusses the site conditions, design of the stabilization works, construction challenges and other lessons learned.
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Pellett, Jason, Horwood, Andrew (2015) SLOPE STABILIZATION AT KM 229 AND KM 701-703 OF THE ALASKA HIGHWAY: SITE CHALLENGES AND LESSONS LEARNED in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Pellett_GEO2015_116,
author = {{Pellett, Jason}, {Horwood, Andrew}}
title = {SLOPE STABILIZATION AT KM 229 AND KM 701-703 OF THE ALASKA HIGHWAY: SITE CHALLENGES AND LESSONS LEARNED}
booktitle = {Proceedings of the 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference}
year = {2015}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {SLOPE STABILIZATION AT KM 229 AND KM 701-703 OF THE ALASKA HIGHWAY: SITE CHALLENGES AND LESSONS LEARNED}
booktitle = {Proceedings of the 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference}
year = {2015}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }