From the Daily Mail:
The West Wing of the White House is all-but disappearing behind an $86 million building project that is going to last for years.
And a mysterious tunnel is being built, fuelling speculation that a secret underground lair is what’s really under construction.
In recent weeks, an expanding and sometimes ear-splitting zone of excavation has enveloped the mansion’s famous office wing.
Heavy equipment and metal-and-concrete superstructures are part of the vast construction project.
The front door and the Marine who guards it have disappeared behind a high green-and-white plywood fence. From Pennsylvania Avenue, all that’s visible is a sliver of second-floor roof line.
For years to come, the front yard at 1600 Pennsylvania will remain a noisy building site, say officials in charge of the White House’s ‘Big Dig’.
Officials describe the job as an overdue upgrade of underground utilities. That includes water and sewer lines, electrical conduits, pipes for chilled and hot water and steam heat systems, and storm sewers. Heating, air conditioning and fire alarm systems are being replaced. Some systems are getting backups.
[continues in the Daily Mail]