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A466 between B4348 and A49(T), Herefordshire, County of (Grid ref SO493310) A466 between B4348 and Herefordshire, County of boundary, Herefordshire, County of (Grid ref SO500176) A466 between Monmouthshire boundary and A466 Dixton Rd/Monk St, Monmouthshire (Grid ref SO508150) A466 between A466 split and A40, Monmouthshire (Grid ref SO510129) A466 between A466 North Parade/Monk St and A40, Monmouthshire (Grid ref SO512132) A466 between A40 and A4136, Monmouthshire (Grid ref SO512127) A466 between A4136 and Monmouthshire boundary, Monmouthshire (Grid ref SO520118) A466 between B4293 and A48, Monmouthshire (Grid ref ST524940) A466 between B4293 and Monmouthshire boundary, Monmouthshire (Grid ref SO532000) A466 between A 48T and M48 JCT 2, Monmouthshire (Grid ref ST532920) A466 between A 48T and M48 Junction 2, Monmouthshire (Grid ref ST532920) A466 between Bigsweir and Redbrook, Gloucestershire (Grid ref SO536100)