- A646 between A671 and A679, Lancashire (Grid ref SD810333)
- A646 between A679 and A682, Lancashire (Grid ref SD816320)
- A646 between A682 and New Rd, Lancashire (Grid ref SD835308)
- A646 between Glen View Rd and A671, Lancashire (Grid ref SD850305)
- A646 between A671 and Lancashire boundary, Lancashire (Grid ref SD871290)
- A646 between Calderdale boundary and Cross Lee Rd, Todmorden, Calderdale (Grid ref SD900261)
- A646 between Cross Lee Rd and A6033, Calderdale (Grid ref SD935245)
- A646 between A6033 and Castle Lane, Calderdale (Grid ref SD940242)
- A646 between Castle Lane, Todmorden and A6033, Calderdale (Grid ref SD975266)
- A646 between A6033 and Warley Wood Ave, Luddenden Foot, Calderdale (Grid ref SE000266)
- A646 between Warley Wood Ave and A6139, Calderdale (Grid ref SE055241)
- A646 between A6139 and A646, Calderdale (Grid ref SE060242)
- A646 between A58 and A629, Calderdale (Grid ref SE080240)