Floods
Around 150,000 Pakistanis in Sindh province have been evacuated to higher ground because of the swollen Indus River, a government spokesman said.
Officials expect the floodwaters to recede nationwide in the next few days as the last river torrents empty into the Arabian Sea.
But survivors may find little left when they return home - the waters have washed away houses, roads, bridges and crops, and leaving millions homeless and penniless.
In Sindh, there are already 600,000 people in relief camps set up during the flooding.
The accident happened in Guanghan, a city about 50 kilometers (30 miles) north of the Sichuan provincial capital of Chengdu, when floods loosened piers on the Shitingjiang bridge, the official Xinhua News Agency said.
The website of the provincial propaganda department said no fatalities were reported by railway officials.
The train was traveling from Xi'an in northwestern Shaanxi province to Kunming in southwestern Yunnan province.

Workers remove debris from a bridge washed out by flooding in the Double Springs community outside Cookeville, Tenn., on Thursday, Aug. 19, 2010
The downpours Wednesday hit some of the same parts of Middle Tennessee that were inundated with severe flooding in May, but forecasters don't foresee it wreaking the same kind of havoc. Portions of Middle and East Tennessee as well as areas of southern Kentucky and western North Carolina and Virginia have been under flash flood warnings or watches.
Much of the damage in Tennessee was in Putnam County, where a home floated off its foundation and a train carrying sand derailed when the tracks were washed away. Roads were washed out and some minor bridges were affected, but no injuries or deaths were reported, Tennessee Emergency Management Agency spokesman Jeremy Heidt said.

Stunned survivors search for bodies amongst the debris left by the tsanami on Lalomanu Beach in September 2009.
Simultaneous earthquakes, with one hiding the other, are unusual "and almost certainly increased the size of the tsunami and its destructiveness on some Tongan islands," New Zealand's GNS Science said in a statement.
Global earthquake readings initially indicated a single large "normal faulting" quake of magnitude 8.0 had occurred, producing an extensional motion while the tsunami waves indicated a "thrust" event with compressional movement.
The scientists said they were unable to reconcile the conflicting data until six weeks after the event when measurements from a small Tongan island showed there must have been two large earthquakes.
Their findings appear this week as the cover story in the prestigious science publication Nature.
"This is a rare phenomenon," lead author John Beavan, a geophysicist at GNS Science, said Wednesday.

Water floods the road at 5 E Concession and Gold Mine Road, about a 10 km drive northwest from a section of Highway 148 that was closed due to flooding.
Police closed Dunrobin Road to all but local traffic from Kinburn Road all the way to Constance Bay Road after heavy rain raised water levels of a normally calm creek.
Water that usually drains into Buckham's Bay instead washed over Dunrobin Road and the surrounding area.
While thunderstorms were seen across the region on Sunday, Environment Canada said a localized storm in the Constance Bay and Woodlawn areas dropped between 75 and 100 mm of rain.
Woodlawn resident Lynne Wilson, whose property backs onto the creek, said the water from the creek came gushing down making the water level several feet higher than normal.
"We couldn't believe it," said Wilson. "There was so much rain."
Spain's government says three people have died in flash floods in towns close to southern city of Cordoba.
The Interior Ministry says one man was found dead Tuesday morning in a car that had been washed away in torrential overnight rain in the small town of Aguilar de la Frontera.
The ministry says the body of a woman who also had been in the vehicle was found some 150 meters (165 yards) away.
Another man was killed when an exterior wall of his house collapsed on top of him in the nearby town of Bujalance.
Television images showed damaged cars piled together along mud-packed streets in Aguilar while people mopped out their houses.
United Nations aid agencies have provided assistance to hundreds of thousands of victims of floods but relief operations have yet to reach an estimated six million people, a UN report said.
The lives of 16 million people have been disrupted by one of the worst catastrophes in Pakistan's history. Six million still need food, shelter and water, the UN said in a statement.
Highlighting the scale of the disaster, Prime Minister Yousuf Raza Gilani said in an Independence Day speech that the country faces challenges similar to those during the 1947 partition of the subcontinent, Reuters reported.
A third of Pakistan is now under water, and fresh rainfall threatens two more waves of flooding in the southern Sindh province.
Britain branded the international response to the catastrophe "lamentable" and charities said Pakistan was suffering from an "image deficit" partly because of perceived links to terrorism.
The United Nations has launched an appeal for $US460 million ($A512.08 million), but aid groups say the response has been sluggish and flood survivors have lashed out at Pakistan's weak civilian government for failing to help.
In north-western Slovakia, the TA3 television channel reported that heavy rainfall had caused a dam to break, flooding the towns of Handlova and Prievidza.
TV pictures showed flood water careening down streets, carrying cars away.
Unconfirmed eyewitness reports suggested that several people are missing, but no deaths have yet been confirmed. On the Facebook page of the TA3 channel, local residents appealed for information about at least two people.
In parts of the south of the country, flooding was also reported.
In the Czech Republic, the CTK news agency reported two missing people as a result of flooding over the past several days.






