Llangollen Canal part of the London Midland and Scottish Railway soon afterwards. After the takeover by the London Midland and Scottish Railway, regular maintenance was often not carried out, and gradually the canals silted up, so that boats could not operate with full loads. Traffic declined, and was significantly affected by a breach that occurred at the Perry Aqueduct, about to the south of Frankton locks, which effectively closed the Montgomeryshire Canal to all traffic. Traffic beyond Frankton to Llangollen had ceased in 1937, and the Frankton to Hurleston section was not used after 1939. The London Midland and Scottish Railway obtained
Llangollen Canal the level of the canal by . After another mile (1.6 km), there is a lift bridge just before the entrance to the Whitchurch Arm, which served the town of Whitchurch. Part of it remains open, and is used for moorings. The section from the main line to Sherryman's Bridge was opened on 6 July 1808, and in 1811 a further extension into the town reached Castle Well. The arm remained closed when the canal reopened in the 1950s, but Whitchurch Town Council looked at ways of bringing boats back into the town in the early 1980s and the embryonic