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A303 between A30 and B3170, Devon (Grid ref ST221080) A303 between B3170 and Devon boundary, Devon (Grid ref ST247103) A303 between Somerset boundary and A358, Somerset (Grid ref ST300136) A303 between A358 and A356, Somerset (Grid ref ST450167) A303 between A356 and A3088, Somerset (Grid ref ST479188) A303 between A3088 and spur to A37, Somerset (Grid ref ST492200) A303 between A303 main route mid-junction and A37, Somerset (Grid ref ST515225) A303 between spur to A37 and A372, Somerset (Grid ref ST520239) A303 between A37 and B3151, Somerset (Grid ref ST538251) A303 between B3151 and A359, Somerset (Grid ref ST570250) A303 between A359 and A359, Somerset (Grid ref ST600261) A303 between A359 and A371, Somerset (Grid ref ST653266) A303 between B3081 and A303 main route, Somerset (Grid ref ST707279) A303 between A371 and B3081, Somerset (Grid ref ST740296) A303 between B3081 and Somerset boundary, Somerset (Grid ref ST754299) A303 between Dorset boundary and Dorset boundary, Dorset (Grid ref ST770299) A303 between Wiltshire boundary and A350, Wiltshire (Grid ref ST805328) A303 between A350 and A303 main route, Wiltshire (Grid ref ST885341) A303 between A350 and A303 spur, Wiltshire (Grid ref SU000375) A303 between A303 main route and A36, Wiltshire (Grid ref SU011380) A303 between A303 spur and A360, Wiltshire (Grid ref SU066407) A303 between A360 and A344, Wiltshire (Grid ref SU102414) A303 between A360 and A344, Wiltshire (Grid ref SU126420) A303 between A344 and A345, Wiltshire (Grid ref SU150420) A303 between A345 and A3028, Wiltshire (Grid ref SU160422) A303 between A3028 and A338, Wiltshire (Grid ref SU209428) A303 between A338 and A342/A343 roundabout, Hampshire (Grid ref SU250441) A303 between A342/A343 roundabout and A303 spur to A343, Hampshire (Grid ref SU341453) A303 between A343 and A303 main route, Hampshire (Grid ref SU344447) A303 between A303 spur to A343 and A3057, Hampshire (Grid ref SU350445) A303 between A3057 and A3093, Hampshire (Grid ref SU380446) A303 between A3093 and A30, Hampshire (Grid ref SU400443) A303 between A303 and A30 spur, Hampshire (Grid ref SU461420) A303 between A303 main route and A34, Hampshire (Grid ref SU462419) A303 between A30 and A30, Hampshire (Grid ref SU462419) A303 between A30 and A303, Hampshire (Grid ref SU465419) A303 between A30 and A30/M3, Hampshire (Grid ref SU550446)