 The 3rd Brigade would not reach the west wall of the Citadel until 25 February by which time the PAVN-VC had successfully withdrawn from the battlefield.It was estimated that it would have taken at least 16 battalions to establish an effective cordon around Huế, at this time there were only 30 battalions available in all of I Corps.On the night of 1/2 February PAVN sappers successfully brought down the Bach Ho (railroad) and the Trường Tiền bridges across the Perfume River, restricting movement from the south towards the Citadel, but failed to destroy the An Cuu Bridge over the Phu Cam Canal.