How long did it take Roman soldiers to build Hadrian’s Wall?

The initial construction of Hadrian’s Wall took approximately six years to complete.1

The project was initiated after Emperor Hadrian arrived in Britain in 122 CE to establish a definitive frontier for the Roman Empire. While the wall was built primarily by soldiers from the three legions stationed in Britain, the design underwent several changes during its development, including the addition of forts and the narrowing of the stone wall's width. Following this initial six-year period, the structure underwent various expansions and modifications throughout the remainder of the Roman occupation of Britain.12