The Miteri Bridge in Rasuwa district, 120 km northeast of Kathmandu, was swept away by flooding at around 3:15 am on Tuesday.
Eighteen people, including six Chinese nationals, have gone missing, official sources said.
According to the National Disaster Risk Reduction and Management Authority (NDRRMA), 11 people, including two police personnel, were rescued by the joint team of Nepal Army, Armed Police Force and Nepal Police.
Arjun Paudel, chief district officer of Rasuwa, said the flood caused heavy damage. Authorities have advised residents downstream to move to safer areas.
The flooding also swept away several houses and five electric vehicles imported from China. PTI SBP NSA NSA