Hi hstmatt, where do you live? there are two ways to get to the jct, both a drive and park up and then require a walk 1, would take you about 10-15 min walk which take you to the jct and the other would take about 20 min coming from the other direction,
route one is from the A533 Northwich road from Dutton, follow this road towards Northwich turn right down Lodge Lane pas the garden centre and follow road to parking space besides private houses on the left,continue on foot to the private road sign near the farm buildings. if you continue striaght on (dont bear left past the sign)through the buildings and follow path to the right down cobble road this will bring you to the under bridge of the main line.
route 2. get to Frodsham Golf club and follow road to Aston pass the school and at the sharp left hand bend in the road keep straight on down the narrow road follow this road until you come to a right hand turn in the road with a dirt track which continue striaght on park up here, on foot follow the track which will take you to the main line. hope this helps