Big public projects have overrun.  Another one is the Boston Big Dig.  <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Big_Dig" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Big_Dig</a>.  The estimated cost was $2.8 billion initially and scheduled to complete in 1998, but it was completed only in 2007 with $14.6 billion.  It&#x27;s estimated that the project will ultimately cost $22 billion, including interest, that will be paid off until 2038.