YSRCP Minister Ambati Rambabu on Thursday visited the Polavaram project in Nellore. Speaking to the media personnnel after reviewing the work progress with engineers, Ambati said the diaphragm wall of the project was damaged during floods in 2020 and 2021 due to faulty planning and execution of the project by the TDP government. He further stated that with the new changes in the diaphragm of the polavaram project, costs may escalate further.