Archaeological Monitoring during groundworks associated with piling for a new footbridge. An archaeological watching brief was conducted at Water Lane and Sovereign Street, Leeds, during groundworks associated with the construction of the Sovereign Street Footbridge across the River Aire. Several 19th or 20th century walls were recorded during the watching brief. These are likely to belong to a series of warehouses present along the banks of the River Aire. These walls were overlain by modern levelling deposits to a depth of between 1.2m and 1.5m. A post-medieval millstone was also recovered from the south side of the River Aire during the removal of made-ground deposits.