The A3 runs from London to Portsmouth
SZ6299 : End of the road (A3).
The A3, known as the Portsmouth Road for much of its length, is a dual carriageway, or expressway, which follows the historic route between London and Portsmouth. For much of its 67 mile length, it is a trunk road and, apart from a section in London is dual carriageway. At its southerly end, the original road has been replaced by the A3(M), but the designation A3 is still used to identify the old road. The road goes through the newly constructed Hindhead Tunnel.
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