M27 motorway

M27
Route information
Length	27.9 mi (44.9 km)
Existed	1972–present
History	Constructed 1972–83
Major junctions
West end	Cadnam 50°55′06″N 1°35′35″W / 50.9182°N 1.5930°W / 50.9182; -1.5930 (M27 motorway (western end))
Major intersections	J3 → M271 motorway J4 → M3 motorway J12 → M275 motorway
East end	Portsmouth 50°50′12″N 1°03′54″W / 50.8366°N 1.0650°W / 50.8366; -1.0650 (M27 motorway (eastern end))
Location
Country	United Kingdom
Primary destinations	Southampton, Fareham, Portsmouth, (Ringwood), (Bournemouth), (Salisbury), (Winchester), (Chichester), (Brighton)
Road network
Roads in the United Kingdom Motorways A and B road zones
← M26 M32 →

The M27 is a motorway in Hampshire, England. The main reason it was built was to link the cities of Southampton and Portsmouth. It is not yet finished, and more of it to the east has not been built yet.^[1][2]

M27 motorway junctions
miles	km	Westbound exits (B carriageway)	Junction	Eastbound exits (A carriageway)	Coordinates
0.0 1.2	0.0 2.0	Road continues as A31 to The WEST, Ringwood, Bournemouth and Poole	Terminus J1	Cadnam A336, Brook, Bramshaw B3079, Lyndhurst A337	50°55′14″N 1°35′22″W / 50.92051°N 1.58958°W / 50.92051; -1.58958 (M27, Junction 1)
		The New Forest, Cadnam, Lyndhurst A337		Start of motorway
4.2 4.6	6.8 7.4	Salisbury A36, Fawley A326	J2	Salisbury, Romsey A36, Fawley A326, Paultons Park	50°56′45″N 1°31′46″W / 50.94583°N 1.52950°W / 50.94583; -1.52950 (M27, Junction 2)
6.6 6.8	10.6 11.0	Southampton, The Docks M271(S), Romsey M271(N)	J3	Southampton, The Docks M271	50°56′45″N 1°28′35″W / 50.94577°N 1.47637°W / 50.94577; -1.47637 (M27, Junction 3)
		Rownhams Services (Roadchef)	Services	Rownhams Services (Roadchef)	50°57′26″N 1°26′57″W / 50.95732°N 1.44917°W / 50.95732; -1.44917 (M27, Rownhams Services)
9.4 9.8	15.2 15.7	The MIDLANDS, London, Winchester M3	J4	The MIDLANDS, London, Winchester M3	50°57′14″N 1°24′28″W / 50.95394°N 1.40767°W / 50.95394; -1.40767 (M27, Junction 4)
11.7 11.9	18.9 19.2	Southampton, Eastleigh, Airport A335	J5	Southampton, Eastleigh, Airport A335	50°56′58″N 1°22′16″W / 50.94948°N 1.37115°W / 50.94948; -1.37115 (M27, Junction 5)
		Non- exsistent	J6	'Non-exsistent'
15.5 15.7	24.9 25.2	Hedge End A334	J7	Hedge End, Botley A334	50°55′01″N 1°19′03″W / 50.91700°N 1.31763°W / 50.91700; -1.31763 (M27, Junction 7)
16.2 17.0	26.0 27.4	Southampton, Hamble, East Docks A3024	J8	Southampton (E), Hamble A3024	50°53′54″N 1°18′44″W / 50.89838°N 1.31222°W / 50.89838; -1.31222 (M27, Junction 8)
19.9 20.6	32.1 33.1	Fareham (W) A27, Whiteley	J9	Fareham (W) A27, Whiteley	50°52′28″N 1°15′09″W / 50.87431°N 1.25257°W / 50.87431; -1.25257 (M27, Junction 9)
23.2 23.5	37.4 37.8	Alton A32 (No access from A32 to M27)	J10	No exit	50°52′00″N 1°10′56″W / 50.86678°N 1.18232°W / 50.86678; -1.18232 (M27, Junction 10)
24.4 24.7	39.2 39.8	Fareham (C) A27, Gosport (A32)	J11	Fareham (C) A27, Gosport (A32)	50°51′36″N 1°09′27″W / 50.86004°N 1.15760°W / 50.86004; -1.15760 (M27, Junction 11)
27.7 28.1	44.6 45.2	Portsmouth, Ferries M275	J12	Cosham, Paulsgrove, Hilsea A27, Portsmouth (W), Ferries M275	50°50′32″N 1°05′34″W / 50.84213°N 1.09271°W / 50.84213; -1.09271 (M27, Junction 12)
29.0	46.6	Start of motorway	Terminus	No exit, access to A3 via J12	50°55′14″N 1°35′22″W / 50.92051°N 1.58958°W / 50.92051; -1.58958 (M27, Junction 1)
		Cosham A3(N), Hilsea A3(S)		Road continues as A27 to Havant, Portsmouth (E), Brighton and London (A3(M))
Notes Distances in kilometres and carriageway identifiers are obtained from driver location signs/location marker posts. Where a junction spans several hundred metres (yards) and the data is available, both the start and finish values for the junction are shown. Coordinate data from ACME Mapper.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access