On the west bank of the river below the bridge is Waltham Brooks nature reserve. Coldwaltham lock, on the branch through the Hardham Tunnel, is still marked on modern maps, and the section from the lock to the river still holds water. Just to the north of Amberley, the river is crossed by the Arun Valley line again at Timberley Bridge. At the village of Bury, the West Sussex Literary Trail joins the western bank and another footpath joins the eastern bank. The next bridge is Houghton Bridge, close to Amberley railway station. The river splits into two channels here, and the bridge spans both. Similar to Greatham Bridge, it looks medieval, but was built in 1875. There is a solid section on the island between the channels, with a single arch over the eastern channel and four arches over the main river. The chalk pits which provided trade to the navigation are now the location of Amberley Museum & Heritage Centre, a site with many items of industrial heritage on display.