A3(M) motorway
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![]](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Motorway_Right.svg/4px-Motorway_Right.svg.png "]"){kind=small}
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| Route information | |
| Length: | 5 mi (8 km) |
| Existed: | 1979 – present |
| Major junctions | |
| North end: | Horndean |
| South end: | Bedhampton |
| Location | |
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Primary destinations: |
(London), (Portsmouth), (Chichester), (Petersfield), Waterlooville |
| Road network | |
.svg)
The A3, known as the Portsmouth Road or London Road in sections, is a major road connecting London and Portsmouth passing close to Kingston upon Thames, Guildford, Haslemere and Petersfield. For much of its 67-mile (108 km) length, it is classified as a trunk road and therefore managed by Highways England. Almost all of the road has been built to dual carriageway standards or wider. Apart from bypass sections in London, the road travels in a southwest direction and, after Liss, south-southwest.
Close to its southerly end, motorway traffic is routed via the A3(M), then either the east-west A27 or the Portsmouth-only M275 which has multiple lanes leading off the westbound A27 — for non-motorway traffic, the A3 continues into Portsmouth alongside the A3M, mostly as a single carriageway in each direction through Waterlooville and adjoining small towns. The other section of single carriageways is through the urban environs of Battersea, Clapham and Stockwell towards the northern end, which has to accommodate bus lanes and parking meter bays.
By the 17th century, the historic Portsmouth Road bore great strategic significance as the road link between the capital city and what became the settled main port of the Royal Navy, as well as a non-military port like nearby Chichester — a petition was passed by Her Majesty for the expansion of the bench of justices of the town of Guildford along its route, in consideration of the importance of the Portsmouth Road, in 1603. Many of the other towns and villages that the road passed through gained income and, in the case of towns, a market advantage as a result — principally in the history of Kingston upon Thames, Godalming and Petersfield. The modern A3 follows the general route of the Portsmouth Road, but it bypasses many of the towns and villages along the way, leaving the various stretches of the old route for local traffic — for instance, the A307, its original course through Kingston-upon-Thames and Esher, retains its name, Portsmouth Road.
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Wikipedia