Llangollen Canal season. Its origins as parts of two separate canals can be seen from the fact that the bridges are numbered from 1 at Hurleston to 70 at Rowsons Bridge, just past Frankton Junction. Continuing along the route to Llangollen, bridge numbering restarts at 1, while bridges 71 and upwards continue along what is now the Montgomery Canal, but was formerly the Ellesmere Branch to Llanymynech, where it joined the Montgomeryshire Canal. A notable feature of the canal is the Pontcysyllte Aqueduct, built by Thomas Telford. Opened in 1805, the aqueduct is more than long and above the valley floor. It
Llangollen Canal as the branch was constructed. At Frankton Junction the Montgomery Canal, which is partially restored, heads southwards. For historic reasons the bridge numbering continues down the Montgomery Canal and a second bridge numbering series for the Llangollen Canal begins with Rowson's Bridge (which is numbered both 1W and 70). The "W" addition was part of a Mimimum Safety Standards scheme instigated by British Waterways, to avoid possible confusion, especially for emergency services, of having different bridges on the same canal with the same number. British Waterways consulted with the Inland Waterways Association and the Shropshire Union Canal Society before finally