The final lock was the sea lock at Woodmill. There are no visible remains of it, although its location can still be seen. The mill was to the west, and now forms part of the Woodmill Outdoor Activities Centre, with the main building used as a canoe shop. The centre was set up in the late 1960s, and is a registered charity. The navigation officially continued downstream to a wharf at Northam, and although there was never a towpath on the tidal section, the Itchen Way long distance footpath follows the eastern bank of the river for most of the way. Nothing remains of Northam Quay, and the bridge has been rebuilt twice since the first construction of 1796, the last time in 1954. The river also passes under the A3035 Cobden Bridge, and a railway bridge built in 1866, with two sets of round iron columns supporting the structure over the main channel, which retains most of its original appearance and now forms part of the West Coastway Line.