 These turrets were positioned approximately one-third and two-thirds of a Roman mile to the west of the Milecastle, and would probably have been manned by part of the milecastle's garrison.The turrets associated with Milecastle 48 are known as Turret 48A and Turret 48B.Turret 48A (Willowford East) () is situated on a river terrace on the south bank of the River Irthing.