A423 road

A423
A423
Route information
Length	22.4 mi (36.0 km)
Major junctions
South end	A445 ; A45
North end	Near Coventry
Location
Country	United Kingdom
Road network
	Roads in the United Kingdom; Motorways; A and B road zones;
	← A424
	← A424

The A423 road is a

A45 near Coventry

.

Route

It starts in Banbury town centre as Southam Road and goes through the Southam Road Industrial Estate, then just north of Banbury it crosses over the

A45 near Ryton

.

The other section of the A423 is part of the

A4142/A4074 Heyford Hill roundabout, a distance of 1.4 miles (2.3 km). The section, carrying 50,000 vehicles per day, includes a bridge over the Cherwell Valley railway line and Hinksey Stream. The bridge is in need of replacement which is expected to cost £90 million with work starting in 2023 and completion in 2026.^[1] The replacement will include work for the Oxford Flood Alleviation Scheme, a bus lane and improvements in pedestrian and cyclist facilities.^[2]

History

Its original route when first classified in 1922 was from

A42 and A415. A curious feature of the route was a 3-mile (4.8 km) gap between Benson, Oxfordshire and a point 1.2 miles (1.9 km) north west of Nuffield, which resulted from the construction of RAF Benson across the line of the road. The detour though Crowmarsh Gifford was designated the B479 and A4130

rather than A423.

The last section of the Oxford Ring Road was completed in 1965, and the A423 was rerouted away from the centre of Oxford to form part of the ring road. From 1971 to 1990 the A423 joined the then

A423(M) motorway at Maidenhead.^[4]

On the completion of the M42 motorway in the early 1980s, the phase of the A423 between Tamworth and Coventry became the A51 (to the A47 junction), B4098 between the A47 and Keresley and A4170 into Coventry. Subsequently, the A51 was curtailed at Kingsbury with the B4098 extending along the A4170 into Coventry City Centre.

The final downgrading came in 1990 when the

Google StreetView image – here

References

^ "Kennington Railway Bridge replacement project cost jumps to £90m". BBC News Online. 20 January 2022. Retrieved 21 January 2022.
^ "A423 Kennington improvements programme". Oxfordshire County Council. 2021. Archived from the original on 21 January 2022. Retrieved 21 January 2022.
^ 1922 road list
^ Pathetic motorways website

52°13′25″N 1°23′16″W / 52.22363°N 1.3878°W / 52.22363; -1.3878

[1] "Kennington Railway Bridge replacement project cost jumps to £90m". BBC News Online. 20 January 2022. Retrieved 21 January 2022.

[2] "A423 Kennington improvements programme". Oxfordshire County Council. 2021. Archived from the original on 21 January 2022. Retrieved 21 January 2022.

[3] 1922 road list

[4] Pathetic motorways website

[1]

[2]

[4]

v t e A roads in Zone 4 of the Great Britain road numbering scheme
	A4 A40 A41 A42 A43 A44 A45 A46 A47 A48 A49
	A400 A403 A404 A405 A406 A412 A413 A414 A415 A417 A418 A419 A420 A421 A422 A423 A426 A427 A428 A429 A431 A432 A433 A441 A442 A444 A445 A446 A448 A449 A452 A453 A454 A456 A458 A461 A465 A466 A468 A469 A470 A473 A474 A475 A476 A477 A478 A479 A482 A483 A485 A486 A487 A489 A490 A491 A493 A494 A496 A498 A499
	A4005 A4006 A4008 A4010 A4018 A4032 A4042 A4050 A4053 A4054 A4055 A4059 A4060 A4061 A4063 A4069 A4074 A4076 A4080 A4085 A4086 A4103 A4107 A4109 A4110 A4113 A4117 A4118 A4119 A4123 A4130 A4133 A4135 A4136 A4138 A4142 A4144 A4146 A4148 A4150 A4155 A4160 A4161 A4174 A4200 A4202 A4204 A4214 A4216 A4221 A4226 A4230 A4232 A4234 A4240 A4241 A4260 A4361 A4400 A4536 A4540
List of A roads in Zone 4 List of B roads in Zone 4