Natural or man-made disasters?

Hanzhong Gate Bridge railings are cracking?Natural or man-made disasters?Yesterday, 16:00, Nanjing Construction Committee organized a media briefing on the railing column Hanzhong Gate Bridge reconstruction project quality problems cracking the situation briefing, saying that "the main structure of the bridge intact, no security risk."Reporter followed by the Internet found that in June of this year "bridge sticky" just won the "2009 Nanjing municipal engineering survey and design excellence Second Prize"!