Jefferson Memorial's Shows Signs of Sinking
Underground, though, the problems may be huge: Slowly, almost imperceptibly, parts of the complex seem to be sinking into the mud.
It's probably not endangering the majestic 32,000-ton domed structure itself, although it's being monitored for movement.
The big problem seems to be a section of the sea wall that is breaking from the memorial's plaza and settling into the Tidal Basin. The "ring road" along the memorial's circumference also seems to be shifting, officials say.
Such movement is an alarming -- and chronic -- problem at the Jefferson Memorial, which was built in the late 1930s and early 1940s atop pilings and caissons sunk into an artificial mud flat that is about 100 feet deep. Engineers have been struggling for decades to keep everything firmed up.
The National Park Service, which oversees the 18-acre memorial site, is trying to see how bad the movement is this time and is wondering what it will take to fix it.
The current problems, at one of the most photogenic monuments in the country, were noticed early last year, said Stephen Lorenzetti, acting superintendent of the National Mall & Memorial Parks.
Since then, the western section of the sea wall, which separates the memorial complex from the Tidal Basin, has dropped in places about six inches below the plaza, which it adjoins...
comments powered by Disqus
- Roman Gladiators ate a mostly vegetarian diet and drank a tonic of ashes after training
- Massachusetts is celebrating the 250th anniversary of the wedding of John and Abigail Adams
- King Tut had overbite, club foot because his parents were brother and sister
- Prehistoric humans were far smarter than previously assumed
- Priests race to save manuscripts from jihadists in Iraq
- 2 conservative groups are leading the fight against the new AP standards
- The secret of successful history departments
- AHA president suggests older historians should consider making way for younger historians
- Niall Ferguson Joins Schwarzman Scholars as Distinguished Visiting Professor in China