A303 Road - Route

Route

The A303 starts at the M3 motorway south of Basingstoke at Junction 8, as a dual carriageway. It heads south west, crossing the A34 road near Bullington before passing south of Andover. It bypasses Amesbury. The route then becomes single carriageway before passing Stonehenge. After Winterbourne Stoke the route once again becomes dual carriageway, meeting the A36 at Deptford. There is then another section of single carriageway road, before a further section of dual two lane road near Berwick St Leonard. It enters a valley through the village of Chicklade. From here it follows the terrain up to Mere, where it runs north of the town as another dual carriageway bypass. Continuing west, it passes south of Wincanton and then north of Sparkford to a roundabout where the road reverts once more to single carriageway. At Yeovilton the road becomes dual two lane again, and connects with the A37 which joins it until it reaches the end of the bypass. This final section of dual carriageway ends at South Petherton. It runs north of Ilminster where it meets the A358 road. After this, the route is more south westerly through the Blackdown Hills, where it is a narrow road following the contours of the land. The end of the A303 is reached where it joins the A30. Between Ilchester and Shores Bridge (over the River Parrett, east of South Petherton) the road follows the course of the Roman Fosse Way.