Baku, August 8, AZERTAC One of the longest ancient wooden bridges in China, located in Fujian province, collapsed on Saturday night after a fire broke out, according to China Daily. No casualties or injuries were reported.Wan'an Bridge, which has a history of more than 900 years, in the village of Changqiao in Pingnan county caught fire at around 9:10 pm. The blaze was put out by 10:45 pm, according to the local emergency management bureau.The local authorities are looking into the cause of the incident and the public security bureau has started an investigation.There are more than 50 wooden arch bridges in Pingnan. Measuring almost 100 meters long and 5 meters wide, Wan'an Bridge is the oldest and longest wooden bridge in the country.It was listed as a key national cultural relic in 2006. The construction of wooden arch bridges uses the most sophisticated techniques among all wooden bridges in China, and the techniques themselves were listed as an intangible cultural heritage by UNESCO in 2009.