Footage shows part of the bridge, in the southwestern province of Sichuan, crashing into the ground just months after its construction.

A newly opened bridge has partially collapsed in China.

In footage, part of the bridge, in China 's southwestern province of Sichuan, crashes into the ground as a huge cloud of smoke rises up next to a mountain.

There were no reports of any casualties.

Police in the city of Maerkang had closed the 758-metre-long Hongqi bridge to traffic on Monday afternoon after cracks appeared on nearby shops and roads.

Shifts were also seen in the terrain of a mountain, local government said.

Conditions on the mountainside then worsened on Tuesday afternoon, with continuous heavy rainfall triggering landslides and causing the collapse of the approach bridge and roadbed.

Construction of the bridge finished earlier this year, according to the contractor Sichuan Road & Bridge Group on social media.

The bridge is located on a highway linking the country's heartland with Tibet.

An investigation into the cause of the collapse has been launched.

According to Chinese media, there was one truck on the bridge at the time of the collapse. The driver was successfully rescued.

视频画面显示，这座位于四川省西南部的桥梁在建成仅数月后，部分桥体便坍塌坠地。

中国一座新开通的桥梁发生部分坍塌。

视频画面显示，中国四川省境内一座桥梁的部分桥体轰然坍塌坠地，与此同时，山体旁腾起巨大的烟尘。

目前尚无人员伤亡报告。

马尔康市警方于周一下午关闭了长达758米的红旗桥，禁止车辆通行，原因是附近商铺和道路出现了裂缝。

当地政府表示，该山区地形也发生了位移。

周二下午，山坡上的情况进一步恶化，持续强降雨引发了山体滑坡，并导致引桥和路基坍塌。

据承包商四川路桥集团在社交媒体上发布的消息，这座大桥已于今年早些时候竣工。

这座大桥位于连接国家腹地与西藏的高速公路上。

针对坍塌事故原因的调查已经展开。

据中国媒体报道，桥梁坍塌时桥上有一辆卡车，司机已成功获救。