 Other attacks along Highway 1 damaged or destroyed 20 bridges and 26 culverts between the Hải Vân Pass and Phu Bai and Highway 1 was closed to convoy traffic until early March.On 1 February, III Marine Amphibious Force (III MAF) Commander Lieutenant General Robert Cushman alerted the 1st Cavalry Division commander, Major General John J. Tolson, to be ready to deploy his 3rd Brigade into a sector west of Huế.By 22