It took 50 years and $11 billion to complete a train station beneath NYC's Grand Central Terminal. It shows how hard it is to build things in the US.

• New commuter rail service to New York City's Grand Central Terminal began last week.
• The new station cost more than three times its initial budget and faced significant delays.
• It's an example of the US's broader struggle to build in recent decades.

Commuters from a swath of New York City suburbs have a slick, new way to get to the east side of Manhattan by train. And it took only 50 years and $11.1 billion to make it happen.