In 1485 the Vicar of Sheffield, Sir John Plesaunce, and William Hill, who was a master mason, both agreed to build a bridge of stone "over the watyr of Dune neghe the castell of Sheffeld" at a cost of about £67. A small chapel, dedicated to the Virgin Mary, was built close to the bridge, and the bridge became known as 'Our Lady's Bridge'. When built it could only be crossed by pedestrians as there were steps at either end of the bridge. The chapel had been converted for use as a wool warehouse by 1572, and was subsequently used as an Alms house.