The double decker bus got wedged beneath the railway bridge on King Street in Sileby at around 9:00 this morning, crushing the whole of the top deck.
The driver was the only person on board.
Network Rail engineers where able to say the bridge was safe within 20 minutes but trains were disrupted during this time.
"Superficial damage" will be dealt with during routine maintenance work later in the year.
Police recovered the bus just before 10:45. They are investigating the cause of the incident and can't say whether they are speaking to the driver.
The road was closed for sometime while the clear-up operation took place and reopened just after 12:00.
It was not possible to get a comment from Ausden Clark, the bus company.
Residents are now returning to their homes in Sileby in Leicestershire after they were evacuated by the bomb squad who were called to deal with suspicious devices.
Police were called to an address in Peashill Close in Sileby around 3.30pm today after grenades were discovered. The Ministry of Defence was called in but there was found to be no threat to public safety. The cordon around the area was lifted around 8.40pm this evening.
Bomb disposal experts have been called in after police found "suspect devices" at an address in Leicestershire. Officers were called to Peashill Close in Sileby at 3.30pm this afternoon.
The road remains closed and police say they expect to be at the scene for most of this evening.