The torrential rains that drenched the southern Mexican state of Chiapas in the past few days made two rivers overflow their banks and caused two bridges to collapse, but no injuries have been reported, emergency management officials said.

Between 25 meters (82 feet) and 40 meters (131 feet) of the Cahoacan bridge, located one kilometer (0.62 miles) from the city of Tapachula, near the border with Guatemala, collapsed, the Chiapas state emergency management office said.

Employees from several public agencies and army troops, who activated their emergency management plan, established a detour to keep the traffic flowing to the Ciudad Hidalgo and Talisman border crossings.

The torrential rains on the coas of Chiapas caused the Cahoacan and Texcuyuapan rivers to overflow their banks in less than three hours.

The downpours also caused the Cahua bridge in the city of Tuxtla Chico to collapse, the city's mayor, Esau Guzman, said.

Emergency management office personnel evacuated about 100 dwellings in five neighborhoods in Tapachula and moved the affected residents to shelters.

About 150 families in Tuxtla Chico had to go to shelters, Guzman said.

Officials have advised residents to take measures to deal with the effects of the heavy rains.