We've just received notification from Network Rail that a section of the railway bridge parapet at Bridge 23, Cooper Bridge Viaduct, has fallen into the River Calder below. Network Rail are currently assessing the bridge; however, they have advised that they are currently unable to see where the stone has landed, which may have created dangerous underwater obstructions. As a precaution, we will be closing this section of navigation, along with the footpath below the bridge, until we can assess the safety of boats and pedestrians passing through in daylight tomorrow. We are also awaiting further confirmation from Network Rail regarding the safety of the remaining parapet. An update will be provided at approximately midday tomorrow, Thursday 12th June. Thanks.