M40 motorway

M40
M40
Route information
	Part of
	Maintained by Highways England
Length	89.0 mi (143.2 km)
Existed	1967–present
History	Opened: 1967; Completed: 1991
Major junctions
Southeast end	Denham
	; J1a → M25 motorway; ; M42 motorway;
Northwest end	Tanworth in Arden
Location
Country	United Kingdom
Counties	Buckinghamshire, Oxfordshire, Northamptonshire, Warwickshire
Primary; destinations	London; Uxbridge; Beaconsfield; High Wycombe; Oxford; Banbury; Leamington Spa; Warwick; Birmingham;
Road network
	Roads in the United Kingdom; Motorways; A and B road zones;

The M40 motorway is a motorway between Denham, near London; and Solihull near Birmingham in England. It also goes through Oxford. It was built in stages between 1967 and 1991 and is 89 miles (143 km) long.

Junctions change

mile	km	Southbound exits (B carriageway)	Junction	Northbound exits (A carriageway)	Coordinates
M40 motorway
18.1	29.2	End of motorway Road continues as A40 to London	J1	Start of motorway Road formed from main carriageways of A40 from London	51°33′41″N 0°29′45″W / 51.561305°N 0.495887°W / 51.561305; -0.495887 (M40, J1)
18.1	29.2	Slough A412 Uxbridge A4020 Non motorway traffic	J1
19.9 20.4	32.0 32.9	Watford (M1) Heathrow Airport (M4) (M3, M23, M11) M25	J1a	Watford &(M1) Stansted Airport (M11) Heathrow Airport (M4) Gatwick Airport (M23) M25	51°33′39″N 0°31′53″W / 51.560798°N 0.531335°W / 51.560798; -0.531335 (M40, J1A)
24.8 25.3	39.9 40.7	Beaconsfield, Amersham, Slough A355, Beaconsfield services Extra	J2 Services	Beaconsfield, Amersham, Slough A355, Beaconsfield services Extra	51°35′39″N 0°37′39″W / 51.594295°N 0.627637°W / 51.594295; -0.627637 (M40, J2)
27.8 28.1	44.7 45.2	No access	J3	Loudwater and High Wycombe (East) A40	51°36′12″N 0°41′30″W / 51.603359°N 0.691710°W / 51.603359; -0.691710 (M40, J3)
31.3 31.6	50.3 50.9	High Wycombe, Marlow, Maidenhead A404 (M4)	J4	High Wycombe, Marlow A404 (M4)	51°36′44″N 0°46′07″W / 51.612261°N 0.768485°W / 51.612261; -0.768485 (M40, J4)
38.9 39.3	62.6 63.2	High Wycombe (West), Stokenchurch A40	J5	Stokenchurch A40	51°39′38″N 0°54′46″W / 51.660524°N 0.912895°W / 51.660524; -0.912895 (M40, J5)
41.4 41.8	66.7 67.2	Watlington, Princes Risborough B4009	J6	Thame, Watlington, Princes Risborough B4009	51°40′20″N 0°57′38″W / 51.672236°N 0.96066°W / 51.672236; -0.96066 (M40, J6)
47.0 75.6	75.6 76.2	No access	J7	Thame, Wallingford, A329	51°43′28″N 1°03′27″W / 51.724583°N 1.057477°W / 51.724583; -1.057477 (M40, J7)
48.0 48.4	77.3 77.9	No access	J8	Oxford, Cheltenham A40	51°43′56″N 1°04′37″W / 51.732291°N 1.076832°W / 51.732291; -1.076832 (M40, J8)
49.0 49.2	78.9 79.2	Thame, Aylesbury A418 Oxford (A40), Oxford services Welcome Break	J8a Services	Thame, Aylesbury A418 Oxford (A40), Oxford services Welcome Break	51°44′24″N 1°05′44″W / 51.740052°N 1.095457°W / 51.740052; -1.095457 (M40, J8a)
60.3 60.6	97.1 97.6	Bicester, Aylesbury A41 Oxford, Newbury A34, Blenheim Palace	J9	Bicester A41 Oxford, Newbury A34, Blenheim Palace	51°52′08″N 1°11′54″W / 51.868754°N 1.198454°W / 51.868754; -1.198454 (M40, J9)
65.9 66.2	106.0 106.6	Northampton A43 (M1) B430, Cherwell Valley services Moto, Silverstone	J10 Services	Northampton A43 (M1) B430, Cherwell Valley servicesMoto, Silverstone	51°56′59″N 1°12′22″W / 51.949635°N 1.206093°W / 51.949635; -1.206093 (M40, J10)
76.2 76.7	122.7 123.4	Banbury A422 Daventry A361, Paulerspury, Towcester	J11	Banbury A422 Chipping Norton A361, Paulerspury, Towcester	52°04′22″N 1°18′48″W / 52.072675°N 1.313295°W / 52.072675; -1.313295 (M40, J11)
86.8 87.0	139.7 140.0	Gaydon B4451	J12	Gaydon B4451	52°11′32″N 1°27′29″W / 52.192219°N 1.458135°W / 52.192219; -1.458135 (M40, J12)
89.8	144.5	Warwick Services Welcome Break	Services	Warwick Services Welcome Break	52°13′05″N 1°30′15″W / 52.218125°N 1.504269°W / 52.218125; -1.504269 (M40, Warwick Services)
92.1 92.3	148.2 148.6	No access	J13	Leamington, Warwick, Warwick Castle A452 B4100	52°14′26″N 1°33′13″W / 52.240678°N 1.553578°W / 52.240678; -1.553578 (M40, J13)
93.9 94.2	151.1 151.6	Leamington A452	J14	No access	52°15′25″N 1°35′18″W / 52.256863°N 1.588211°W / 52.256863; -1.588211 (M40, J14)
95.0 95.3	152.9 153.4	Warwick, Warwick Castle A429 Stratford, William Shakespeare Coventry A46 Leicester (M69)	J15	Warwick A429 Stratford, Coventry A46 Leicester (M69)	52°15′36″N 1°36′48″W / 52.260068°N 1.613359°W / 52.260068; -1.613359 (M40, J15)
103.8 104.1	167.1 167.6	Henley-in-Arden A3400	J16	No access	52°20′06″N 1°46′28″W / 52.335129°N 1.774549°W / 52.335129; -1.774549 (M40, J16)
105.7 106.0	170.1 170.6	Start of motorway Motorway is formed by two sliproads from the M42	J17 (M42, J3a)	End of motorway Road continues as M42 The SOUTH WEST, Birmingham (South & West), Redditch & M5 The North, Birmingham (North, East) (M1, M6)	52°20′51″N 1°49′09″W / 52.347367°N 1.819139°W / 52.347367; -1.819139 (M40, End of motorway)

Data^[1] from driver location signs are used to provide distance and carriageway identifier information. Where a junction goes across several hundred metres, both start and end locations are given.

References change

↑ "Traffic England Live Traffic Condition Map (selected Popups)". Highways Agency. Archived from the original on 10 February 2012. Retrieved 11 November 2009.

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[1] "Traffic England Live Traffic Condition Map (selected Popups)". Highways Agency. Archived from the original on 10 February 2012. Retrieved 11 November 2009.

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