The Economic Times. Bhubaneswar, Oct 29 (PTI) Rail services on the Howrah-Chennai route were disrupted on Thursday after the swollen Bahuda river crossed the danger mark at two railway bridges in Odisha's Ganjam. BHUBANESWAR: Nine trains were cancelled and 14 others diverted on Thursday as Cyclone Arnab disrupted railway services on the Howrah-Chennai route and the.