Washington Monument gets $7.5M for repairs WASHINGTON (AP) - A billionaire history buff has stepped forward to donate the $7.5 million matching gift that's needed to start repairing cracks near the top of the Washington Monument caused by last summer's East Coast earthquake. Businessman David Rubenstein said he was inspired to help fund the repairs to the 555-foot obelisk when it became clear how severely damaged it was by a 5.8-magnitude earthquake on Aug. 23. The donation was first reported late Wednesday by The Associated Press. The famous landmark received about 1 million visitors a year before it was closed to the public after the quake. The Park Service hopes to have a contractor begin work by the end of August. The repair work is expected to take a year to complete, likely keeping the monument closed for two years. Congress allocated $7.5 million in December on the condition that private donations would match that amount. The National Park Service and nonprofit Trust for the National Mall are expected to announce Rubenstein's gift Thursday morning. It will be the largest gift to the nonprofit group, which aims to raise $350 million to restore the mall's grounds and facilities. The combined $15 million in public and private funds is expected to cover the cost of repairing damage directly caused by the quake, said National Park Service spokeswoman Carol Johnson. Repairing water damage will cost more, as would a seismic study or reinforcements to strengthen the obelisk against future earthquakes, she said. Rubenstein, a co-founder of The Carlyle Group, began building the private equity firm's business in Washington and said he wanted to restore a symbol of the nation and hasten repairs to reopen the landmark. "This Washington Monument is probably one of the most recognizable buildings in the United States next to the Capitol and the Empire State Building," he said. It could use a little repair work, and I wanted people to get to see it as soon as possible. Experts have noted the monument needs more than just a little repair work, though it has been deemed structurally sound. The August quake was centered some 40 miles west of Richmond, Va., and felt from Canada to Georgia. It damaged the Washington National Cathedral, where pieces of mortar rained down from its vaulted ceiling. At the Washington Monument, panicked visitors fled down flights of stairs on the day of the big shake, but there were no known deaths or serious injuries in the region. The earthquake caused numerous cracks to form in the obelisk, which was the tallest man-made structure in the world when it was completed in 1884. Surveillance video taken the day of the quake and later released by the park service showed the spire shaking violently. Daylight could be seen through some of the cracks, the largest of which was reported to be at least 4 feet long and about an inch wide. A report in December recommended extensive repairs and reinforcements to preserve the spire. It said some marble panels were cracked all the way through near the top portion of the monument. Cracks near its peak also have left the monument vulnerable to water damage from rain, engineers noted. Last fall, daredevil engineers on a "difficult access team" rappelled from the top to conduct a visual inspection of the exterior of the obelisk. Officials said it's unclear whether the work will require scaffolding to be built around the monument, similar to what was erected during a restoration project from 1999 to 2001. Caroline Cunningham, president of the Trust for the National Mall, called Rubenstein "a true patriot" and said his gift "demonstrates how much people care about this space." She said it should serve as an example for other philanthropists. There has long been talk of sprucing up the mall at the heart of the nation's capital. A design competition is under way to develop ways to improve the mall, including the Washington Monument grounds. Finalists will be chosen in May, and the group will seek funding for each project. The nonprofit group has targeted parts of the mall that are run down from over use and neglect as a focus for its restoration efforts. Rubenstein has made large gifts in recent years to Washington's cultural institutions including the Smithsonian Institution, the National Archives, the Library of Congress and the Kennedy Center. Last month, Rubenstein gave $4.5 million to the National Zoo to fund its giant panda reproduction program for five more years. The monument, which he visited recently, was built with private $1 donations eventually totaling over $1 million, Rubenstein said. Construction began in 1848, but funds ran out during the Civil War when the monument was left as an embarrassing stump for years. It was finally completed in 1884 and was the world's tallest man-made structure until it was eclipsed by the Eiffel Tower. It remains the tallest structure in Washington. Rubenstein owns a copy of the Magna Carta, among other historical documents, and reveres George Washington. "I like to remind people about American history," Rubenstein said. George Washington is an incredible figure. When he was the head of the Revolutionary War Army, he could have stayed on as really the head of the government when we won the Revolutionary War, but he put down his arms. Trust for the National Mall: http://www.nationalmall.org Follow Brett Zongker at https://twitter.com/DCArtBeat