Roa, Norway
Gran, Norway
Highway 4, between the municipalities
of Roa and Gran, there were several
challenges that needed to be solved.
For instance, how to build a four-lane
highway through a swamp without
destroying it? In addition, there turned
out to be a lot of quick clay in the
ground, a special kind of clay that is
prone to collapse and become liquid
under pressure. Furthermore, a limited
carbon footprint was an important
project requirement.
As the company responsible for
the engineering, COWI realized that
geotechnics would be laying the
framework for the job. How demanding
the ground conditions were would limit
the possibilities in terms of execution.
"We stabilized the swamp area with
a special geotechnical solution,
for which we were dependent on
a close cooperation between the
geotechnicians and construction
teams. This solution has been the key
to success on the project," says project
director at COWI, Frode Geir Bjørvik.
About The Project
Frode Geir Bjørvik,
Project Director at COWI
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