Llangollen route 418, offering journeys to Wrexham and to London via Shrewsbury, Telford and Birmingham. The Ellesmere Canal was intended to connect the coal mines and ironworks at Ruabon and Wrexham to the canal network and thence to the sea via the River Mersey and the River Severn. The plans were altered, and instead of connecting Trevor northwards to the sea via the River Dee and southwards to the Severn, the canal ran eastwards to join the national network at Hurleston Junction on the Shropshire Union Canal near Nantwich. A feeder canal, navigable to Llangollen, was constructed from Trevor to tap
Llangollen flow. The bridge was also widened in 1873 and again in 1968, using masonry which blended in with the older structure. It is a Grade I listed structure and a Scheduled Ancient Monument. On the outskirts of the town is Plas Newydd ("New Mansion" or "New Place"), from 1780 the home of the Ladies of Llangollen, the Honourable Sarah Ponsonby, Lady Eleanor Butler and their maid Mary Caryll. The Pillar of Eliseg is another old monument. There is an electoral ward of the same name. This ward includes Llantysilio community and has a total population taken at the 2011 census