MUMBAI, Nov. 1 -- Traffic was disrupted near Andheri West Metro Station on Friday after a portion of the road near the T-junction leading to DN Nagar caved in, prompting the Brihanmumbai Municipal Corporation (BMC) and Mumbai Traffic Police to close one lane for urgent sewer line repairs. The affected stretch has been barricaded to prevent accidents. The southbound lane has been temporarily closed, while the northbound lane has been converted into a two-way route to maintain vehicular movement, officials from BMC said. Chakrapani Alle, assistant commissioner of the K-West ward, said the cave-in was caused by a damaged underground sewer line. "The caved-in cement concrete road will be opened up and the sewer line, which lies 25 feet below the surface, will be repaired," he said. "The metro structure and operations are completely safe and running smoothly. BMC engineers have inspected the site along with our civil team, and the necessary repair work will be carried out by the BMC," Maha Mumbai Metro Operation Corporation Ltd said in a statement. Repair work is expected to continue over the next two days until the damaged sewer line is fixed and the road surface is reinstated, officials said....