Mawddach Crescent is located near the end of the trail on the banks of the estuary, half a mile or so before Barmouth Bridge.
This is a minor detour from the main trail, which should ONLY be taken if you are ON FOOT.
Take the right-hand path four-hundred meters after Arthog and follow it through the tall trees and reeds. Turn left after the gate to reach the estuary. Follow the path BEHIND the row of houses before rejoining the banks of the estuary.
Behind or In Front
The path in front of the houses is currently in the process of being opened up, so you may be able to walk in front of the houses. If you do this, please be aware that people do live here, so please pass by quietly.
I prefer this route as it bypasses the station and gives you a better view of Barmouth, the estuary and a side view of Barmouth Bridge. Cross the style over the fence to rejoin the trail and cross the half a mile long bridge.