A40 road

A40
A40
	Holborn Viaduct carries the A40
Route information
	Part of E30
	Maintained by National Highways, English local authorities, South Wales Trunk Road Agent and North & Mid Wales Trunk Road Agent
Length	261.2 mi (420.4 km)
Major junctions
East end	A1 / A1121 in City of London
	see also: A40 road (London) A5 in Greater London; M40 in Greater London; A34 / A44 near Oxford; M5 near Cheltenham; A38 in Gloucester; A48 near Gloucester; A49 at Bridstow
West end	Goodwick (Fishguard)
Location
Country	United Kingdom
Counties	England:; Greater London, Buckinghamshire, Oxfordshire, Gloucestershire, Herefordshire; Wales:; Monmouthshire, Powys, Carmarthenshire
Primary; destinations	London, Beaconsfield, High Wycombe, Oxford, Cheltenham, Gloucester, Ross-on-Wye, Monmouth, Abergavenny, Brecon, Llandovery, Llandeilo, Carmarthen, Haverfordwest, Fishguard
Road network
	Roads in the United Kingdom; Motorways; A and B road zones;

The A40 is a trunk road which runs between London and Goodwick (Fishguard), Wales, and officially called The London to Fishguard Trunk Road (A40) in all legal documents and Acts. Much of its length within England has been superseded by motorways, such as the M40, and has lost its trunk road status, though it retains it west of Gloucester, including its length within Wales. It is approximately 260 miles (420 km) long. The eastern section from Denham, Buckinghamshire to Wheatley, Oxfordshire is better served by the M40 and its former function of linking London with Cheltenham and Gloucester has been taken by the M4, A419 and A417 via Swindon.

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