A404 road

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A404 road
Major junctions
From:	Westway, Marylebone, London
	A40 road A219 road A406 road A312 road A410 road A412 road A413 road A416 road A355 road A40 road A308 road A4 road M25 motorway M40 motorway M4 motorway A404(M) motorway
To:	Maidenhead
Location
Primary destinations:	Wembley, Harrow, Northwood, Rickmansworth, Amersham, High Wycombe, Marlow
Road network
Roads in the United Kingdom Motorways • A and B road zones

The A404 is a road in the United Kingdom that starts at Paddington in London and terminates near Maidenhead in Berkshire.

The road initially follows a course through north-west London via Harlesden, Wembley, Harrow, Northwood and Rickmansworth. The M25 Junction 18 is at Chorleywood. The A404 crosses into Buckinghamshire and continues towards Little Chalfont and Amersham.

Between Paddington and Amersham, the road closely follows the route of the London/Harrow-on-the-Hill/Aylesbury railway lines, The Chiltern Line, from Marylebone, and runs near several stations along that line.

At Amersham Common, the road turns south-west and continues in that direction joining the Amersham by-pass (A413) for a short distance, and then proceeds towards High Wycombe. After passing through the town centre, and crossing the A40, it changes to a dual carriageway up the hill to the M40 Junction 4, and continues as a dual carriageway past Marlow and Bisham.

The road eventually becomes the A404(M) at Maidenhead Thicket. It then runs a short distance towards the M4 where the A404(M) finally terminates at Junction 8/9.

Recent Changes

A number of changes have been made to the course of the A404 since the 1970s including:

1. The building of the "Marlow by-pass" section of the A404 in 1972 (which replaced the old road from Handy Cross to Marlow).
2. The building of the "Amersham by-pass", A413, in 1987 which meant the A404 no longer went through Amersham Old Town, but skirted to the west and north of Amersham.
3. The building in 1992 of the section by-passing Burchetts Green roundabout and the village of Stubbings in Berkshire. This section also allowed the A404 to continue neatly into the A404(M) (formerly the A423(M)) without drivers having to negotiate a roundabout.

v · d · e A roads in Zone 4 of the Great Britain road numbering scheme A4 A40 A41 A42 A43 A44 A45 A46 A47 A48 A49 A403 A404 A405 A406 A412 A413 A414 A415 A417 A418 A419 A420 A421 A422 A423 A425 A426 A427 A428 A429 A431 A432 A433 A435 A441 A442 A444 A445 A446 A448 A449 A452 A453 A454 A456 A458 A461 A465 A468 A469 A470 A472 A473 A474 A475 A476 A477 A478 A482 A483 A484 A485 A486 A487 A488 A489 A490 A491 A493 A494 A496 A497 A498 A499 A4005 A4006 A4008 A4010 A4012 A4018 A4025 A4032 A4037 A4040 A4042 A4050 A4053 A4054 A4055 A4059 A4060 A4061 A4063 A4067 A4069 A4074 A4076 A4080 A4085 A4094 A4103 A4107 A4109 A4113 A4117 A4118 A4119 A4123 A4130 A4133 A4135 A4138 A4142 A4146 A4148 A4150 A4155 A4160 A4161 A4169 A4173 A4174 A4202 A4212 A4216 A4217 A4221 A4226 A4230 A4232 A4234 A4240 A4241 A4260 A4289 A4361 A4400 A4536 A4540 List of A roads in Zone 4 List of B roads in Zone 4

v · d · e Transport in Buckinghamshire Road Motorways M1 · M4 · M25 · M40 A-Roads A4 · A40 · A41 · A404 · A412 · A413 · A418 · A421 · A422 · A428 · A4010 · A4012 · A4146 · A4155 · A5 · A508 · A509 · A5130 Roman roads Akeman Street · Watling Street Notable Junctions Handy Cross roundabout · Denham Roundabout · Magic Roundabout (High Wycombe) Motorway service stations Beaconsfield · Newport Pagnell Rail Main lines West Coast Main Line · Chiltern Main Line · Great Western Main Line Other lines Marston Vale Line · London to Aylesbury Line · Metropolitan line · Princes Risborough to Aylesbury Line · Marlow Branch Line Closed lines Varsity Line · Great Central Main Line · Banbury to Verney Junction Branch Line · Brill Tramway · Wycombe Railway · Watlington and Princes Risborough Railway · Cheddington to Aylesbury Line · Aylesbury and Buckingham Railway · Wolverton to Newport Pagnell Line · Bedford to Northampton Line Other Chinnor and Princes Risborough Railway · East West Rail Link · Buckinghamshire Railway Centre · Seer Green rail crash · List of railway stations Air Denham Aerodrome · Turweston Aerodrome · Silverstone Heliport · Wycombe Air Park · RAF Bases Waterways Rivers River Thames · River Great Ouse Canals Bedford & Milton Keynes Waterway (under construction) · Grand Union Canal · Branches: Slough Arm · Wendover Arm · Aylesbury Arm Footpaths National Trails Thames Path · The Ridgeway Long-distance footpaths Icknield Way (path) · Chiltern Way · Greater Ridgeway · Midshires Way · Ouse Valley Way · Shakespeare's Way · Swan's Way Cycle Paths Route 4 · Route 6 · Route 50 · Route 51 · Route 57 · Route 61 · Route 70 Related articles v · d · e Transport in Milton Keynes Road Milton Keynes grid road system · A421 · A422 · A4146 · A5 · A509 · A5130 · H6 Childs Way · H10 Bletcham Way · V6 Grafton Street · V8 Marlborough Street Rail Bletchley railway station · Bletchley TMD · Bow Brickhill railway station · East West Rail Link · Fenny Stratford railway station · Marston Vale Line · Milton Keynes Central railway station · Varsity Line · West Coast Main Line · Woburn Sands railway station · Wolverton railway station · Wolverton to Newport Pagnell Line Bus Buses in Milton Keynes · Arriva Shires & Essex · Milton Keynes Coachway · MK Metro · Stagecoach in Northants · United Counties Omnibus Water Bedford & Milton Keynes Waterway (under construction) · Cosgrove aqueduct · Grand Union Canal Other transport Milton Keynes redway system · Watling Street · Wolverton and Stony Stratford Tramway

Coordinates: 51°40′11″N 0°31′29″W / 51.66976°N 0.52477°W / 51.66976; -0.52477

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