Shropshire Union Canal links are to the Llangollen Canal (at Hurleston Junction), the Middlewich Branch (at Barbridge Junction), which itself connects via the Wardle Canal with the Trent and Mersey Canal, and the River Dee (in Chester). With two connections to the Trent and Mersey (via the Middlewich Branch and the Staffordshire and Worcestershire Canal) the SU is part of an important circular and rural holiday route called the Four Counties Ring. The SU main line was the last trunk narrow canal route to be built in England. It was not completed until 1835 and was the last major civil engineering accomplishment of
Ellesmere Canal three-lock arrangement. At this point, the section is now part of the Shropshire Union Canal. This section was added to link the canal to the national network. It became the Ellesmere Branch of the Shropshire Union Canal and is now part of the Llangollen Canal. This was the principal part of the original main line of the canal. It became the Llangollen Branch of the Shropshire Union Canal and is now part of the Llangollen Canal. This section of the canal was added as a navigable feeder. It is now part of the Llangollen Canal. This section (the Llanymynech Branch)