A43 road (Great Britain)

A43
A43 Brackley Bypass
Route information
Length:	60 mi (100 km)
Major junctions
From:	M40 Junction 10
	M40 Junction 10 (southern terminus) M1 Junction 15A A5123 road A1 road A14 road Junctions 7 and 8 A45 road A47 road A413 road A421 road A422 road A427 road A428 road A1175 road A4300 road A4500 road A5 road A508 road A5076 road A5123 road A6003 road A6013 road A6116 road
To:	Stamford
Location
Primary destinations:	Northampton Kettering Corby
Road network
Roads in the United Kingdom Motorways A and B road zones

The A43 is a primary route in the English Midlands, that runs from the M40 motorway near Ardley in Oxfordshire to Stamford in Lincolnshire. Through Northamptonshire it bypasses the towns of Northampton, Kettering and Corby which are the three principal destinations on the A43 route. The A43 also links to the M1 motorway.

The section of the road between the M40 and M1 is designated a trunk road, managed and maintained by the Highways Agency. The remainder of the route is the responsibility of local authorities.

The A43 starts at M40 junction 10 (the location of Cherwell Valley Services) which is widely regarded as being one of the worst motorway junctions in the country despite improvements made in the early 2000s. There are often long tailbacks at the junction, even at off-peak times.

Following the junction with the M40, the A43 first meets a roundabout with the B4100 for traffic headed north-west for the village of Aynho or south for the town of Bicester. Continuing north, the A43 passes many Oxfordshire and Northamptonshire rural villages and towns before meeting the A421 which spurs towards Buckingham and later, Milton Keynes.