Each milecastle on Hadrian's Wall had two associated turret structures. 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 69 are known as Turret 69A (grid reference NY360581) and Turret 69B (grid reference NY354584). None of the turrets between Milecastles 59 and 72 were sought or identified prior to 1961, and the exact locations of turrets 69A and 69B are uncertain.