On 29 February 2008, the Garden Bridge was closed to all traffic, in preparation for its removal. On 1 March 2008, as part of the Bund Refurbishment Project, an extensive reconfiguration of traffic flow along the Bund, and in preparation for World Expo 2010 to be held in Shanghai, Waibaidu Bridge was cut into two sections, detached from its abutments, and moved by boat into a shipyard in Pudong for extensive repairs and restoration. On 6 April 2008, the southern part of the bridge was removed and on 7 April 2008, the northern part was removed as well. The restoration work was undertaken by Shanghai Shipyards at its Minsheng Road docks in Pudong, and formally started on 5 April 2008. According to the project engineers, Almost 160,000 rivets hold China's first steel bridge together. Once common practice in the construction industry, the use of rivets has been replaced by welding. Riveting, a dying art, is now only used on a small scale for building railway bridges and ships. Bridge repairers Shanghai Shipyard found and recruited nearly 60 riveters from two factories in Shanhaiguan of Hebei Province and Xi'an of Shaanxi Province and flew them to Shanghai. They worked in four-man groups, heating rivets to between 900 and 1,000 degrees Celsius before hammering them into the structure. "At night, it was like watching a meteor flying across the sky as one worker cast a heated rivet high and the other quickly took it with tools and hammered it on the bridge without a second's delay, a Shanghai Shipyard engineer said.