- A509 between A5(T) and B4034, Milton Keynes (Grid ref SP850392)
- A509 between B4034 and Tongwell St, Milton Keynes (Grid ref SP860398)
- A509 between A4500/A5128 and Rutherford Drive, Northamptonshire (Grid ref SP865670)
- A509 between A14(T) and A6003, Northamptonshire (Grid ref SP875770)
- A509 between Rutherford Drive and A510/A5193, Northamptonshire (Grid ref SP877696)
- A509 between A45 and A4500/A5128, Northamptonshire (Grid ref SP879660)
- A509 between A510/A5193 and A14(T), Northamptonshire (Grid ref SP881699)
- A509 between A422 and A428, Milton Keynes (Grid ref SP887500)
- A509 between Tongwell St and A5130, Milton Keynes (Grid ref SP890403)
- A509 between A509 and M1 J14, Milton Keynes (Grid ref SP891420)
- A509 between M1 Jct 14 and A5130, Milton Keynes (Grid ref SP892405)
- A509 between B526 and A422, Milton Keynes (Grid ref SP896450)
- A509 between A45 and A5193, Northamptonshire (Grid ref SP898665)
- A509 between A45 and A5193, Northamptonshire (Grid ref SP898665)
- A509 between A428 and Milton Keynes boundary, Milton Keynes (Grid ref SP899550)
- A509 between Northamptonshire boundary and A5193, Northamptonshire (Grid ref SP905599)