Six people were killed by flash floods yesterday in Thabeikkyin, central Mandalay Region, the Ministry of Information said, while another three perished the same day in Thibaw, northern Shan State.
A 19-year-old boy also died in Muse, Shan State, on Friday, the ministry said.
State media today said those killed in Thibaw were swept to their deaths as they stood watching rising floodwaters from a 100-year-old bridge which collapsed.
The Global New Light of Myanmar ran pictures of a picturesque stone bridge sliced in half by a raging brown torrent, and said rescue workers were dispatched to try and find the victims' bodies.
The UN Office for the Coordination of Humanitarian Affairs said up to 12,000 houses have also been damaged in Sagaing Region and Kachin State during recent rains.
Myanmar is struck by annual monsoon rains that are a lifeline for farmers but can also prove deadly, with landslides and flash floods a common occurrence.