Decade's pick of North American progress

摘要

At the BTS meeting on 16 November, Lee Abramson of US consultant Hatch Mott MacDonald reviewed tunnelling projects in North America over the past 10 years. He concentrated on schemes with unusual or unique characteristics, examining the progress made in underground worksrnIn the past decade there have been over 300 significant tunnel projects in North America representing over 800km of tunnel and $1 Obn in construction value. To provide some shape to the review Lee Abramson divided up the projects according to their end use.