Stockholm, Sweden’s capital, built it’s first rail link in 1871. More than a century later, this two-track link was carrying 550 trains per day, and more capacity was needed. In 2009 the city began work on a second 2-track rail link, called Citybanan, which will be completed in 2017 at a cost of about $2 Billion. The project is 3.7 miles long, and includes 2 new underground stations providing direct connections to the existing subway lines. Work is being done below a historic city center and a harbor crossing, through granite, all without disrupting existing transportation services.
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