Washington Monument closed indefinitely after quake

People stand outside of the Lincoln Memorial in Washington, Tuesday, Aug. 23, 2011, after is was evacuated following an earthquake in the Washington area. The 5.9 magnitude earthquake centered northwest of Richmond, Va., shook much of Washington, D.C., and was felt as far north as Rhode Island and New York City. (AP Photo/Jacquelyn Martin)

August 23, 2011 7:57:30 PM PDT
The National Park Service says most of the monuments and memorials on the National Mall have reopened after being closed following the East Coast earthquake.

That excludes the Washington Monument that will be closed indefinitely after engineers found cracks near the top.

The park service says all monuments and memorials were initially evacuated and closed, including the new Martin Luther King Jr. memorial.

But the King memorial and several others that don't include large buildings were reopened within an hour of the 5.8-magnitude earthquake, which struck at 1:51 p.m. Visitors continued streaming through the King memorial Tuesday afternoon.

The Lincoln and Jefferson memorials were closed for several hours but reopened Tuesday evening. The Old Post Office tower will reopen Wednesday morning.