The president has pledged to complete nearly 500 miles of new barrier by the 2020 election — stirring chants of “Build the Wall!” at his campaign rallies. But that construction goal will require a total of $18.4 billion in funding through 2020, far more than the administration has publicly disclosed, the administration’s latest internal projections show.
Planning documents obtained by The Washington Post show the cost of building 509 miles of barriers averages out to more than $36 million per mile. The documents also show that the government would need to obtain — either by eminent-domain claims or purchases — land that lies under nearly 200 miles of proposed barrier.