Rippling bridge

People were getting the shakes along a stretch of the Pearl River yesterday. 
That came as Guangzhou authorities suspended traffic on the 3,618-meter Humen Pearl River Bridge, which connects the Nansha district and Humen town in Dongguan city. 
For it shook so much it set off ripples along the river. Some bridge-crossers said it felt like they were on a small boat. Such reports alarmed the city's transport department to the extent that the bridge was closed at 3.32pm. 
Initial investigations pointed to unusually strong winds blowing along the river, though the bridge appeared to be standing solid. 
The bridge opened in June 1997, and more than 100,000 vehicles cross it daily.