Cumberland Basin walls and associated features including Junction Lock swing bridge

The Cumberland Basin walls and associated features date from 1803 to 1809 and were built by William Jessop, Chief Engineer of the Bristol Dock Company. Further alterations occurred between 1863 and 1873 by Thomas Howard, with later modifications including a swing bridge across Junction Lock constructed in 1925 by John Lysaght Ltd.

The quay and lock walls are built of dressed pennant blocks, with granite and limestone coping stones. Cast iron mooring bollards and capstans line the sides of the Cumberland Basin and its associated locks. The swing bridge over Junction Lock is steel, and the lock gates in Howard’s North Entrance Lock have steel paddles.

The Cumberland Basin is an oval-shaped area, roughly aligned east to west, with Junction Lock at the northeast corner connecting to the Floating Harbour, and North Entrance Lock (Howard’s Lock) at the northwest corner opening onto the River Avon. Jessop’s former South Junction Lock is located at the southeast corner and is now used for mooring. Bridges cross the junction locks—a 1925 swing bridge across Junction Lock, built by John Lysaght Ltd and erected by William Cowlin and Son (plate on the east arch), and a fixed road bridge crossing Jessop’s Lock with steel railings, the underside sealed with dressed stone blocks to create the marina on the harbour side. Howard’s Lock allows pedestrian access across the two lock gates, which retain early to mid-20th century fabric. The former Brunel swing bridge, separately listed at Grade II*, is disused and stands on the southern edge of the lock. A raised platform on the north side of Howard’s Lock provides access to Cumberland Basin Road, with latching posts formerly used to secure the swing bridge.

Mooring bollards are positioned around the basin and locks, terminating at a cobbled slipway to the River Avon on the north side of Howard’s Lock. Numerous historic capstans are situated beside lock gates and former lock gates, including on the peninsula of land to the south side of Howard’s Lock, where the mouth of the former north entrance lock has been sealed. A metal ladder is fixed to the southern edge of this former lock, where it adjoins Brunel’s Lock (separately Grade II*). Three flights of stone steps are located at the northeast corner of the basin. Other notable features include a 19th-century capstan near the southeast corner of Jessop’s Lock, and a former steel and timber ‘gridiron’ structure attached outside the entrance to the former north entrance lock.