The Montgomery Canal runs from the Llangollen Canal at Frankton Junction to its terminus at Newtown. It is 35 miles (56 km) long and has 25 locks. The Canal is currently under restoration and the sections from Frankton Junction to Gronwyn Bridge, Maesbury (6.5 miles) and Ardleen (bridge 103 lowered) to Berriew (bridge 129 lowered) - a further 11.5 miles - are currently navigable.
The maximum size of boat that can use the Montgomery Canal is
length: 73' 10" (22.51 metres) - Frankton Locks
width: 7' 0" (2.13 metres) - Frankton Locks
headroom: 7' 0" (2.13 metres)
draught: 3' 11" (1.2 metres) - cill of Frankton Locks
Passage through Frankton Locks has to be booked with Canal & River Trust in advance (48 hours notice in the winter).