Over 22 people are reported missing after a British-era bridge collapsed on the Mumbai-Goa highway in Maharashtra on Tuesday night because of heavy rain. Two buses and several vehicles plunged into the river near Raigad district, Devendra Fadnavis said. The chief minister said that the primary reason seems to be the high pressure caused due to flooding of river Savitri due to heavy rains in the catchment area of Mahabaleshwar. \u201cThere were two parallel bridges; one is a new bridge and one constructed during the British era. The old one collapsed.\u201d He even said that PM Narendra Modi assured him of all help from the Centre. The Maharashtra government has rushed an NDRF team from Pune to the spot and rescue operations are underway. They are, however, facing some difficulty owing to heavy rains and consequently a traffic pile-up. NDRF DG OP Singh said: \u201cWe have rushed one NDRF team to the spot from Pune. The team is facing some difficulty in reaching due to heavy rains and traffic, but they will reach shortly. As per initial information, some vehicles and people have been swept away. Our team is equipped with deep divers and life saving equipment. Our team will immediately carry out rescue operations as soon as it reaches.\u201d Maharashtra Chief Minister Devendra Fadnavis appears to be closely monitoring the situation and has been providing updates of the government\u2019s efforts on Twitter. Hon PM @narendramodi spoke to Maharashtra CM @Dev_Fadnavis & took all details of Mahad incidence. \/1 \u2014 CMO Maharashtra (@CMOMaharashtra) August 3, 2016 PM @narendramodi offered all help in rescue and relief operations. NDRF teams are already activated.@NDRFHQ \/2 \u2014 CMO Maharashtra (@CMOMaharashtra) August 3, 2016 Raigad Collector confirms that one way traffic is now resumed on the new bridge. \u2014 Devendra Fadnavis (@Dev_Fadnavis) August 2, 2016 There is no confirmed assessment about casualties since the area is very dark. Administration will ensure speedy rescue & relief operations. \u2014 Devendra Fadnavis (@Dev_Fadnavis) August 2, 2016 Traffic on highway is stopped. Administration is ascertaining strength & stability of new bridge. Once confirmed, traffic will be resumed. \u2014 Devendra Fadnavis (@Dev_Fadnavis) August 2, 2016 There were 2 parallel bridges : one is a new bridge and one constructed during the British era. The old one got collapsed. \u2014 Devendra Fadnavis (@Dev_Fadnavis) August 2, 2016 \u00a0 \u201cTraffic on highway is stopped. Administration is ascertaining strength and stability of new bridge,\u201d he tweeted early on Wednesday.\u00a0\u201cThere is no confirmed assessment about casualties,\u201d he said.