In 2004 Klohn Crippen Berger (KCB) was retained by Emil Anderson Construction. We provided an innovative value engineering design to widen a 2.1 km section of the Trans-Canada Highway. Through careful realignment of the highway in difficult terrain and the use of a unique cantilever structure, two river crossing bridges were eliminated, resulting in savings of approximately $2.4M.
The section of the Trans-Canada Highway is in an extremely rugged section of the Kicking Horse Canyon, approximately 10 km east of Golden, B.C. The project delivery method was traditional design-tender-construct, with value engineering opportunities for the Contractor included in the specifications.
The analysis included careful assessment by KCB rock mechanics specialists of the rock faces on the south side of the highway. The structure was founded on steel pipe piles which were rock-socketed into bedrock. It was constructed of cast-in-place concrete, with a 4.5 m cantilever over the river. Hydraulic protection requirements were provided by a 2000 kg class riprap protection apron. The CAiCE modelling of the fine adjustments in the alignment in the difficult terrain required a high level of skill from the road designers.
Further road realignments at the west end of the section resulted in substantial reduction in the length and height of retaining walls.
- Innovative bridge and wall designs
- Highway design in difficult terrain
- Rock mechanics and pile design
- Hydraulic assessment and protection