A part of a bridge over the Ganga river collapsed in Bihar’s Bhagalpur district early on Monday, officials said.No casualty was reported in the incident.The 4.7-kilometre-long Vikramshila Setu connects Bhagalpur and Naugachia in the district.Bhagalpur District Magistrate Nawal Kishor Choudhary said, “Around 12.50 am, a gap was formed near pillar number 133 of the Vikramshila Setu. Shortly after that, a major slab fell into the river.”There is no information about any vehicle falling with the slab or casualties, he said.”As soon as officials received information about the gap between the two slabs, they acted promptly to remove all vehicles and people from the spot,” the DM said.Stating that traffic is blocked on both sides of the bridge, he urged people to take an alternative route via Munger.On the probable causes of the accident, he said, “An expert engineering committee has been notified, which will investigate the incident.”Asked whether there was damage to the protection wall near the collapsed portion, Choudhary said this could only be ascertained after a proper inspection.In March this year, a video clip surfaced on social media showing the bridge’s protection walls in a deteriorated state. The then Road Construction Minister Dilip Kumar Jaiswal had said that the degraded back wall would soon be reconstructed.