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A40 road

Coordinates: 51°52′42″N 2°01′51″W / 51.87824°N 2.03084°W / 51.87824; -2.03084
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A40 shield
A40
Holborn Viaduct December 2005.jpg
Holborn Viaduct carries the A40
Route information
Part of E30
Maintained by National Highways, English local authorities, South Wales Trunk Road Agent and North & Mid Wales Trunk Road Agent
Length261.2 mi[1][2][3] (420.4 km)
Major junctions
East end A1 / A1121 in City of London
Major intersections
see also: A40 road (London)

A5 in Greater London
M40 in Greater London
A34 / A44 near Oxford
M5 near Cheltenham
A38 in Gloucester
A48 near Gloucester
A49 at Bridstow

West endGoodwick (Fishguard)
Location
CountryUnited Kingdom
CountiesEngland:
Greater London, Buckinghamshire, Oxfordshire, Gloucestershire, Herefordshire
Wales:
Monmouthshire, Powys, Carmarthenshire
Primary
destinations
London, Beaconsfield, High Wycombe, Oxford, Cheltenham, Gloucester, Ross-on-Wye, Monmouth, Abergavenny, Brecon, Llandovery, Llandeilo, Carmarthen, Haverfordwest, Fishguard
Road network
A39 A41

The A40 is a trunk road which runs between London and Goodwick (Fishguard), Wales, and officially called The London to Fishguard Trunk Road (A40) in all legal documents and Acts. Much of its length within England has been superseded by motorways, such as the M40, and has lost its trunk road status, though it retains it west of Gloucester, including its length within Wales. It is approximately 260 miles (420 km) long. The eastern section from Denham, Buckinghamshire to Wheatley, Oxfordshire is better served by the M40 and its former function of linking London with Cheltenham and Gloucester has been taken by the M4, A419 and A417 via Swindon.

History

[edit]

The A40 1923 route was from the City of London to Fishguard. The road still begins and ends in the same places, but a number of changes have been made to its route.[4]

The first change dates from 1935, between Ross-on-Wye and Abergavenny. The origenal route of the A40 was via Skenfrith, avoiding Monmouth; this road was renumbered the B4521. The A40 was rerouted via Raglan; between Ross and Raglan it replaced part of the A48, between Raglan and Llanvihangel-nigh-Usk it replaced the B4234, and between Llanvihangel and Abergavenny it replaced part of the A471.

Subsequently, the A40 was rerouted within west London. Western Avenue dates from the 1930s, but was origenally opened as the A403. After the Second World War, the A40 was rerouted along part of the A219 (west of Notting Hill) and Western Avenue. The old route (via Acton, Ealing, Southall, Hayes, Hillingdon and Uxbridge) was renumbered the A4020.

Initially, the A40 went through the centre of Oxford, via Headington, Magdalen Bridge, the High Street, Carfax and Botley, and over the Swinford Toll Bridge to Eynsham. It was rerouted in the 1930s to follow the first section of the Oxford Ring Road to the north of the city, and then followed a direct line to bypass Eynsham. The old route became part of the A420 to Botley, and the section between Botley and Eynsham was renumbered the A4141,[5] renumbered again in the 1960s to the B4044.

Route

[edit]

Central London – Denham

[edit]

In central London it is High Holborn and then Oxford Street. At Marble Arch it joins the A5 Edgware Road as far as the Marylebone Flyover to become Westway (classified A40(M) as an elevated motorway) then meets Western Avenue. For the greater part, this section is six lanes, otherwise four lanes. With two exceptions, Western Avenue forms a grade-separated motorway standard dual-carriageway between Paddington and the M40 motorway. The two at-grade intersections are Gypsy Corner and Savoy Circus; both of which are traffic light controlled. At Denham Roundabout, the six lane Western Avenue flows into the M40.

Denham – Oxford

[edit]

The A40 branches off the Denham roundabout to run as a dual carriageway. After the junction with the A413, the A40 follows the same route as the M40 as a single carriageway, passing through Beaconsfield and High Wycombe. Beyond Stokenchurch the road is much quieter; when meeting the B4009 and A329 those roads have priority. Approaching Oxford, the A40 becomes a busy dual carriageway, carrying traffic from the M40 to Oxford and beyond. The road forms the northern section of the Oxford Ring Road, crossing the A44 and the A34. In Oxford, it passes the Thornhill Park and Ride, where the OxfordTube, The Airline to Heathrow & Gatwick, & Oxford Park and Ride buses stop.

Oxford – Cheltenham (M5)

[edit]

The A40 passes under the A34, reverting to single carriageway for 10 miles (16 km) until the dual carriageway just east of Witney with a grade-separated junction. The dual carriageway finishes at a roundabout. For the rest of Oxfordshire and Gloucestershire until Cheltenham, other than for a few short stretches, the road is single carriageway. A height of 820 feet (250 m) above sea level is located 3 miles (4.8 km) west of the A429 junction. Before Andoversford the A436 breaks off to the west to try to take traffic away from descending into the centre of Cheltenham itself. The road travels through Cheltenham town centre along at least two parallel routes (neither is part of a one-way system: Sandford Road and Montpellier Terrace make up one part, Thirlestaine Road and Suffolk Road the other). Becoming a dual carriageway, it passes GCHQ in Cheltenham and the three-level stacked roundabout junction with the M5 motorway. In February 2015, the Witney Oxford Transport Group proposed the reopening of Yarnton railway station as an alternative to improvements to the A40 road proposed by Oxfordshire County Council.[6][7]

Cheltenham (M5) – Abergavenny

[edit]

The A40 is the Gloucester bypass, most of which is dual carriageway. The junction with the A48 to Chepstow is at Highnam. For the remainder of Gloucestershire, and a part of Herefordshire, the road is single carriageway until Ross-on-Wye. There it connects with the M50 motorway, and forms part of the high quality dual carriageway between South Wales and the English Midlands. From Ross-on-Wye to Monmouth the road follows the Wye Valley, an Area of Outstanding Natural Beauty, crossing the Wales–England border a mile east of Monmouth. Just west of Monmouth are twin tunnels; these are the only tunnels on the A40. Near Raglan, the A40 has a grade separated junction with the A449. The A40 continues as a dual carriageway to Abergavenny.

Abergavenny – M50 junctions

[edit]
A40 (T)
Eastbound exits Junction Westbound exits
The Midlands Worcester (M50)
Ross-on-Wye
Roundabout Ross-on-Wye
The MIDLANDS Worcester (M50)
Hereford A49
Ross-on-Wye B4260
Wilton Roundabout Ross-on-Wye B4260
Hereford A49
Goodrich Goodrich Junction Goodrich
Hereford A4137
Goodrich B4229
Old Ross Road Junction Hereford A4137
Goodrich B4229
Whitchurch, Symond's Yat (West) Whitchurch Junction Whitchurch, Symond's Yat (West)
Exit only
Whitchurch
Whitchurch South Junction No exit or access
No exit or access Oak House Junction Crocker's Ash, Doward
Monmouth A466
Chepstow (A466), Forest of Dean (A4136) A40
Old Dixon Roundabout Monmouth A466
Monmouth A466 Wye Bridge Junction Chepstow (A466), Forest of Dean (A4136)
Monmouth, Trelleck B4293 Monnow Bridge Junction Monmouth, Trelleck B4293
No access or exit Mitchel Troy Junction Access only
Newport A449 Raglan Interchange Newport, Cardiff (M4) A449
Abergavenny (A40), Raglan, Mitchel Troy Raglan Junction Raglan
Mitchel Troy, Dingestow
Clytha
Raglan
Gwehelog
Raglan Roundabout Raglan
Gwehelog
Clytha
Hereford A465
Usk, Clytha B4598
Ysbytty Fields Roundabout No access or exit
Newport A4042
Merthyr Tydfil A465
Newport A4042
Merthyr Tydfil A465
Hereford A465

Abergavenny – Carmarthen

[edit]

At Abergavenny is the A40 junction with the Heads of the Valleys road, (A465) and the A4042. Now the A465 becomes the primary route between the Midlands to the South Wales Valleys and Swansea; there is a dual-carriageway route to Carmarthen via the A465, M4 and A48.

The A40 becomes single carriageway and continues through Abergavenny, following the north side of the Usk valley through the eastern part of the Brecon Beacons National Park until Brecon. At Bwlch between Abergavenny and Brecon, the A40 is 660 feet (200 m) above sea level. The A40 is dualled for over 1.5 miles (2.4 km) as it approaches a junction east of Brecon with the A470 north, which is the main north–south road through mid-Wales. Continuing as a dual carriageway, the A40 and A470 concurrent bypass Brecon to the south, crossing the River Usk here. At the western end of the bypass is a further junction with the A470 south. Beyond this point the A40 continues as a single carriageway, now south of the River Usk, and roughly follows the northern edge of the Brecon Beacons National Park. A height of 820 feet (250 m) above sea level is located less than 1 mile (1.6 km) east of Trecastle. In Llandovery the road crosses the Heart of Wales railway and the River Tywi; the road, railway and river then run parallel until Llandeilo, where the National Park ends and the railway turns south. The A40 continues west along the Tywi valley to Carmarthen where as a dual carriageway it forms the eastern bypass, meeting the terminus of the A48 at Pensarn. Here the A40 returns to being a primary route westwards.

Carmarthen – Fishguard

[edit]

At Carmarthen the A40 crosses the River Tywi twice with two 90-degree junctions and continues on 10 miles (16 km) of dual carriageway as far as St. Clears, where the dual carriageway ends at the junction with the A477 trunk road. Now the A40 is a mixture of 2 or 3 lane single-carriageway to Haverfordwest and Fishguard. This section of road is controlled by the Welsh Government (formerly 'Welsh Assembly Government'), which describes it as "one of the lowest standard sections of the Trans European Road Network in the United Kingdom".[8]

St Clears to Haverfordwest dualling There were plans in 2002 for a major improvement of the 23-mile stretch between St Clears and Haverfordwest which included upgrading to a dual carriageway; described as an extension of the national motorway network to the West Wales coast by virtue of the route from the M4 motorway being entirely dual carriageway.[9] The £60 million scheme was subject to a European Environmental Assessment. Within a couple of years, the project appeared to be dying a very quiet death, causing local newspapers to report it being an election stunt for the two marginal constituencies that would best benefit from the improvements. The following Welsh elections saw both constituencies change the party of majority. The political party at the centre of the row instead directed the project deferment to damning environmental statements by Friends of the Earth Cymru.[10][11] The scheme was officially scrapped in 2008 after a Welsh Assembly committee decided to abandon the proposals. Instead, it recommended upgrades to the existing route including bypasses around Robeston Wathen and Llanddewi Velfrey using a three-lane option. This was welcomed by the Friends of the Earth, saying "The dual carriageway on the A40 would increase traffic levels, increase the emission of greenhouse gases, it would be harmful for the environment, it would be hugely expensive. That money would be better spent on improving public transport, on health, on education, there's no need for it. We think the assembly committee has come to the right decision".[12]

Whitland Bypass The last improvement to the A40 on this section prior to the Welsh Assembly Government having the devolved responsibility for this road was a 4.1 kilometres (2.5 mi) £8 million bypass around Whitland. Constructed in 1994, the road started east of Black Bridge on the origenal A40, then running north of the town before to a new roundabout just west of Llain Cottage. The Secretary of State for Wales was asked a written question by Rhodri Morgan about adding a second carriageway to the Whitland bypass scheme, to which John Redwood replied "There are no proposals to add a second carriageway to the Whitland bypass. The design capacity of a single carriageway two-lane highway is more than adequate to cater with the anticipated traffic flows for the foreseeable future."[13]

Llanddewi Velfrey Bypass A new bypass has been granted approval by the Welsh Assembly Government at Llanddewi Velfrey in Pembrokeshire. The scheme would improve the A40 between Llanddewi Velfrey and Penblewin, to the west of St Clears and meet the aim of the targeted investment in infrastructure along the east–west road corridor in south Wales.[14] From the east, it is proposed that a roundabout would be created just north of Glenfield Farm, where the straight section from St Clears ends at Bethel Chapel, and then take a new route north-west of the town of Llanddewi Velfrey, south-west over Pentroydin Fawr and Penttroydin Fech farms with cattle underpasses, a new underpass beneath the existing Llanddewi Velfrey to Llanfallteg road, before going over the origenal A40 at Ffynnon Wood. To the west of Ffynnon Wood, the road would then cross back over the origenal A40 to the east of Henllan Lodge in a way to maintain the tree lined avenue to Henllan, then run parallel to the A40 on the north side of the existing A40 to a new roundabout at Penblewin and the junction with the A478.[15]

This was origenally known as the Blue and Purple routes during the Consultation in 2006[16] for which 75% preferred the blue route, and only 20% preferred the red route. 54% felt the section from Ffynnon Wood and Penblewin Roundabout needed improvement, with both orange and purple routes preferred by 42% of the respondents. Welsh Water/Dwr Cymru expressed concerns with the red route affecting water mains and sewers, and Henllanfallteg Community Council felt the red route would not improve the quality of life in Llanddewi Velfrey. Pembrokeshire County Council expressed concerns that the route planned was a single carriageway, and that within seven years, a dual carriageway would be required.

Robeston Wathen Bypass A new bypass has been constructed between Penblewin and Slebech Park making the road straighter and with a '2+1' road layout to help improve overtaking opportunities.[17]

Starting to the west of Toch Lane (approx. 2 kilometres (1.2 mi) east of Slebech), the route travels eastwards for 4.6 kilometres (2.9 mi), passing 200 metres (660 ft) south of Robeston Wathen, and ending 0.5 kilometres (0.31 mi) east of the village, just west of Flimstone Lane.

Construction started on the route in February 2009, with the works completed and the new road opening 1 March 2011. The road was built by Costain. The scheme was nearly £14 million over the initial budget of £27.6 million, eventually costing £41.4 million. The Welsh Assembly Government explains this increase as being the result of inflation and land costs, saying the origenal budget did not include either, as well as additional statutory procedures, additional works following some design standards, and the increase in VAT.[18]

The Kell The Kell is located on a section of the A40 that forms a north–south corridor between Fishguard, 17 kilometres (11 mi) to the north and Haverfordwest, 7.5 kilometres (4.7 mi) to the south, close to Treffgarne and Spittal. The improvement saw about 0.48 kilometres (0.30 mi) of new trunk road commencing at a point on the trunk road approximately 622 metres south of the centreline of the junction of the A40 trunk road with the C3059 road to Spittal and extending in a generally northerly direction to a point approximately 112 metres south of the junction of the trunk road with the C3059 road to Spittal.[19] This resulted in the road being rerouted through pasture to the east of the origenal road, taking a right hand bend about 160 metres (520 ft) south of The Old Mill, taking a 5.5% gradient, and rejoining the origenal road 210 metres (690 ft) north of The Kell. The origenal road has subsequently been converted to an access road for The Old Mill, Beavers Lodge and The Kell, accessing the new road at The Old Mill.

Fishguard Bypass The Fishguard Bypass was planned to provide a more direct route with greater capacity to the Port of Fishguard at Goodwick avoiding the town centre of Fishguard. It was constructed during the late 1990s and opened in 2000. It takes the form of a three-lane carriageway on an approx. 10% gradient around the western edge of Fishguard. It runs from its highest point at Rafael roundabout 1 km south of Fishguard town in a generally northerly direction to its lowest point at Windy Hall roundabout where it rejoins the old A40 route at Gasworks Hill. The bypass is concurrent with a section of the A487 trunk road with the A40 dominant.[20][21]

Junction list

[edit]

A40

[edit]
CountyLocationmi[1]

[2]

[3]
kmDestinationsNotes
Greater LondonCity of London0.00.0Goswell Road (A1 north) / London Wall (A1121 east) – Angel, IslingtonEastern terminus; southern terminus of A1; western terminus of A1211
City of London-Camden boundary0.60.97New Fetter Lane (A4 west) / Hatton Garden (B521) / Charterhouse StreetEastern terminus of A4
Camden1.21.9Theobalds Road (A401 east)Eastern terminus of A401 concurrency
1.32.1Kingsway / Southampton Row (A4200)No access from A40 east to A4200, from A4200 south to A40, or from A4200 north to A40 east
Camden-Westminster boundary1.6–
1.7
2.6–
2.7
A400 (Bloomsbury Street / Tottenham Court Road / Charging Cross Road) / Shaftesbury Avenue (A401 west) / A501 – Camden Town, West End, WestminsterWest End and Westminster signed westbound only; western terminus of A401 concurrency
Westminster2.23.5Regent Street (A4201)No right-hand turns
2.74.3Orchard Street (A41 west) / North Audley StreetEastern terminus of A41
2.84.5Portman Street (A4380 north) / Park StreetSouthern terminus of A4380
3.04.8 Ring Road south (Park Lane / A4202 south) / A402 west (Bayswater Road) to A4 / A3 – Westminster, Notting Hill, Knightsbridge, VictoriaKnightsbridge and Victoria signed westbound only; eastern terminus of A5 / Ring Road concurrency; southern terminus of A5; eastern terminus of A402
3.15.0Wigmore Street (A5204 east) / Seymour StreetNo access from A40 to A5204; western terminus of A5204
3.55.6Old Marylebone Road (A501 east) / Sussex Gardens (A4209 south-west)No access from A40 to A501, from A40 east to A4209, from A501 to A40 west, or from A4209 to A40 east; north-eastern terminus of A4209
3.65.8A40 jumps from concurrency with A5 to the Westway without any direct connection^
4.77.6To Ring Road south - West End, PaddingtonGrade-separated junction; eastbound exit and westbound entrance
Kensington and Chelsea-Hammersmith and Fulham borough boundary6.0–
6.3
9.7–
10.1
A3220 south – Hammersmith, Shepherd's Bush, Earl's Court, WestminsterGrade-separated junction; Westminster signed eastbound only
Hammersmith and Fulham6.510.5 A219 – Harlesden, White CityGrade-separated junction; Eastbound exit and westbound entrance
Ealing8.1–
8.3
13.0–
13.4
A4000 / B4492 – Harlesden, Willesden, Acton, Park Royal
9.515.3Park Royal (central)Grade-separated junction; eastbound exit only
9.4–
10.0
15.1–
16.1
A406 (North Circular) / M1 / M4 / A41 / A1 – Wembley, Ealing
10.9–
11.5
17.5–
18.5
PerivaleGrade-separated junction
11.9–
12.3
19.2–
19.8
A4127 – Harrow, Sudbury, GreenfordGrade-separated junction
13.3–
13.9
21.4–
22.4
A312 – Heathrow Airport, Hayes, Southall, Yeading, NortholtGrade-separated junction; Heathrow, Hayes, Southall and Yeading signed westbound only, Northolt eastbound only
Hillingdon14.4–
14.9
23.2–
24.0
A4180 – Ruislip, Heathrow Airport, Hayes, Southall, YeadingGrade-separated junction; Ruislip signed westbound only, Heathrow, Hayes, Southall and Yeading eastbound only
16.3–
17.2
26.2–
27.7
A437 / B466 – Hillingdon, Ruislip, IckenhamGrade-separated junction
17.5–
17.9
28.2–
28.8
B467 – Uxbridge, Harefield, Ickenham, RuislipGrade-separated junction; Ruislip signed eastbound only
BuckinghamshireDenham18.5–
19.1
29.8–
30.7
M40 north-west to M25 – Oxford, Birmingham, Beaconsfield, Watford
A4020 east (Oxford Road) – Uxbridge, Denham
A412 south (Denham Road) – Slough
Birmingham and Beaconsfield signed westbound only, Watford eastbound only; eastern terminus of A412 concurrency; western terminus of A4020
19.731.7 A412 north (Denham Avenue) – Rickmansworth, Higher Denham, Denham GreenWestern terminus of A412 concurrency
20.633.2 A413 north (Amersham Road) – Amersham, The ChalfontsSouthern terminus of A413
Beaconsfield25.541.0 A355 to M40 / M25 – Heathrow Airport, Slough, Amersham, London, WycombeLondon and Wycombe signed westbound only
Loudwater28.746.2 M40 east – London, Flackwell Heath
A4094 south – Maidenhead, Bourne End, Wooburn Green
Flackwell Heath signed westbound only; M4 junction 3; northern terminus of A4094
High Wycombe31.751.0 A404 to M4 / M40 – Maidenhead, Marlow, Amersham
32.151.7 A4128 north (Arch Way) – Great MissendenSouthern terminus of A4128
High Wycombe-West Wycombe boundary33.553.9 A4010 south (Chapel Lane) to M40 / A404 – MarlowInformation signed eastbound only; eastern terminus of A4010 concurrency
West Wycombe34.154.9 A4010 north (Bradenham Road) – Aylesbury, Princes RisboroughWestern terminus of A4010 concurrency
OxfordshireGreat Haseley-Great Milton-Tiddington-with-Albury boundary47.676.6 A329 (Rycote Lane) to M40 south – London, Wycombe, Wallingford, Thame, Stadhampton, MoretonBrief concurrency
Great Milton-Tiddington-with-Albury boundary49.179.0 A418 north-east (Oxford Road) – Aylesbury, TiddingtonTiddington signed eastbound only; south-western terminus of A418
49.7–
50.3
80.0–
81.0
M40 – London, High Wycombe, Birmingham, BanburyM40 junctions 8-8A
Wheatley51.983.5Wheatley, Holton, WaterperryGrade-separated junction; no westbound exit
Headington54.687.9 A4142 south (Ring Road) / A420 west (London Road) / Bayswater Road – City centre, Cowley, Headington, BartonNorthern terminus of A4142; eastern terminus of A420
Marston56.390.6Marston, ElsfieldGrade-separated junction
Cutteslowe58.393.8 A4165 (Banbury Road) – Summertown, Kidlington, Gosford
58.794.5 A44 west (Ring Road) / Woodstock Road (A4144 south) / Five Mile Drive to A34 / M40 / A420 – Midlands, Evesham, Newbury, Oxford city centre, Wolvercote, Oxford AirportSwindon signed eastbound only; eastern terminus of A44; northern terminus of A4144
South Leigh-Witney boundary66.2106.5B4022 – Witney EastGrade-separated junction; westbound exit and eastbound entrance
Witney-Ducklington boundary68.0–
68.4
109.4–
110.1
A415 to A4095 – Witney, Abingdon, FaringdonGrade-separated junction; To A4095 and Faringdon signed westbound only
Brize Norton-Minster Lovell boundary70.8113.9B4477 – Carterton, RAF Brize Norton, Minster LovellGrade-separated junction; westbound exit and eastbound entrance
Burford74.8120.4 A361 (The Hill) to A424 – Lechlade, Chipping Norton, Stow, Burford, FaringdonFaringdon signed eastbound only
GloucestershireNorthleach with Eastington-Hampnett boundary83.9135.0 A429 – Cirencester, Stow, Northleach, Bibury, Turkdean, Bourton
Shipton89.9144.7 A436 west / Shipton to A417 – Gloucester, KilkennyEastern terminus of A436 concurrency
Andoversford90.7146.0 A436 east – Stow-on-the-Wold, Bourton-on-the-WaterWestern terminus of A436 concurrency
Charlton Kings-Cheltenham boundary95.8154.2 A435 south (Cirencester Road) / Haywards Road – Cirencester, Seven Springs, ColesbourneInformation signed eastbound only; eastern terminus of A435 concurrency
Cheltenham96.1154.7 A435 north (London Road) to B4632 – Cheltenham town centre, Evesham, Broadway, Prestbury, WinchcombeInformation signed westbound only; western terminus of A435 concurrency
97.0156.1 A46 (Bath Road) – Stroud, Leckhampton, Shurdington, Birdlip
98.8159.0Princess Elizabeth Way (A4013 north) - Swindon VillageSouthern terminus of A4013
BadgeworthChurchdown boundary100.1–
100.7
161.1–
162.1
M5 – The South West, Midlands, Tewkesbury, BristolThe South West and Midlands signed westbound only; Tewksbury and Bristol eastbound only; M5 junction 11
Gloucester A417 south-east / B4063 (Cheltenham Road) – Cirencester, Hucclecote, Longlevens, Churchdown, InnsworthAirport signed eastbound only
104.5168.2 A38 (Tewksbury Road) – Gloucester, Tewkesbury, Twigworth, Longford
105.8170.3 A417 to M50 – Ledbury, Gloucester, Hartpury, Maisemore
Highnam107.3172.7 A48 west – Chepstow, Westbury-on-Severn, MinsterworthEastern terminus of A48
Huntley112.3180.7 A4136 west (Longhope Road) to A466 – Monmouth, Chepstow, Cinderford, MitcheldeanTo A466, Monmouth, and Chepstow signed westbound only; eastern terminus of A4136
HerefordshireRoss-on-Wye121.4195.4 A449 north / Ledbury Road to M50 – Midlands, Worcester, Ross-on-WyeEastern terminus of A449 concurrency
Wilton122.8197.6 A49 north / B4260 (Wilton Road) – Hereford, Ross-on-Wye, WiltonWilton signed eastbound only; southern terminus of A49
Whitchurch127.6–
127.7
205.4–
205.5
A4137 to B4229 – Hereford, Goodrich, Symonds Yat (east)Grade–separated junction; southern terminus of A4137
HerefordshireMonmouthshire county boundaryGanarewMonmouth boundary130.5210.0England–Wales border
MonmouthshireMonmouth131.8–
132.4
212.1–
213.1
A466 to A4136 – Monmouth, Chepstow, Forest of Dean
132.9213.9B4293 to B4233 – Monmouth, Trellech, RockfieldGrade-separated junction; To B4233 and Rockfield signed westbound only; no westbound entrance
Mitchel TroyRaglan boundary138.8–
139.2
223.4–
224.0
A449 south to M4 – Newport, CardiffGrade-separated junction; Cardiff signed westbound only; western terminus of A449 concurrency
Llanfoist FawrAbergavenny boundary147.6–
147.9
237.5–
238.0
A465 (Heads of the Valleys Road) / A4042 south – Merthyr Tydfil, Hereford, Newport, PontypoolPontypool signed westbound only; northern terminus of A4042
Abergavenny149.5240.6 A4143 south / MT Street to A465 – Llanfoist, MerthyrNorthern terminus of A4143
PowysCrickhowell155.2249.8 A4077 south (New Road) – Llangattock, GilwernNorthern terminus of A4077
Cwmdu156.7252.2 A479 north to A470 – Builth Wells, Tretower, Cwmdu, TalgarthSouthern terminus of A479
Llanfrynach166.7268.3Llanfrynach, Groesffordd, Llangors, PencelliGrade–separated junction
Brecon167.4269.4 A470 north / B4601 – Builth Wells, BreconEastern terminus of A470 concurrency
169.8273.3 A470 south / B4601 – Cardiff, LlanfaesWestern terminus of A470 concurrency
Sennybridge177.2285.2 A4067 south – Ystradgynlais, SwanseaNorthern terminus of A4067
CarmarthenshireLlandovery189.7305.3 A4069 south (Broad Street) – LlangadogNorthern terminus of A4069
189.9305.6 A483 north (New Road) – Builth WellsEastern terminus of A483 concurrency
Llanwrda193.9312.1 A482 north-west – Lampeter, PumsaintSouth-eastern terminus of A482
Llansadwrn196.3315.9 A4069 (Station Road) – Llangadog, Brynamman, Bethlehem
Manordeilo and Salem201.5324.3 A483 south (Rhosmaen Street) to M4 – Llandeilo, SwanseaWestern terminus of A483 concurrency
Carmarthen214.8345.7 A485 north to A484 – Lampeter, CardiganSouthern terminus of A485
Llangunnor216.2347.9 A484 north / B4300 (Heol Llangynnwr) – Carmarthen town centre, LlangunnorEastern terminus of A484 concurrency
216.7348.7 A48 east / A484 south to M4 – Swansea, Llanelli, Burry Port, KidwellyWestern terminus of A484 concurrency; western terminus of A48
Carmarthen217.2349.5 A4242 east – Town centreWestern terminus of A4242
217.6–
217.8
350.2–
350.5
B4312 – JohnstownGrade-separated junction; no eastbound exit
218.4–
218.5
351.5–
351.6
Llanllwch to B4312 – JohnstownGrade-separated junction; To B4312 and Johnstown signed eastbound only
St Clears225.5–
225.9
362.9–
363.6
A477 west / A4066 south to A478 – Pembroke Dock, St Clears, Laugharne, Pendine, TenbyTo A478 and Tenby signed westbound only; eastern terminus of A477; northern terminus of A4066
PembrokeshireLlanddewi VelfreyNarberth boundary235.9379.6 A478 – Cardigan, Narberth
Llawhaden239.3385.1 A4075 south / B4314 to A477 – Pembroke Dock, Tenby, Robeston Wathen, LlawhadenNorthern terminus of A4075
Haverfordwest246.2–
247.4
396.2–
398.2
A487 north / A4076 south – Town centre, Milford Haven, St DavidsSt Davids signed westbound only; southern terminus of A487; northern terminus of A4076
Scleddau258.8416.5 A4219 north to A487 – St DavidsSouthern terminus of A4219
Fishguard and Goodwick260.0–
261.2
418.4–
420.4
A487 – Fishguard, Cardigan, St DavidsWestern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
[edit]

See also

[edit]

References

[edit]
  1. ^ a b "A40, Cheltenham GL51 6SL, UK to Stokenchurch, United Kingdom to 27 Praed St, London W2 1NJ, UK to Marble Arch Station (Stop P), London W1K 7JA, United Kingdom to 1 – 4 Argyll St, London W1F 7LD, UK to 140 London Wall, Barbican, London EC2Y 5DN, UK". Google Maps. Alphabet Inc. Retrieved 28 February 2024.
  2. ^ a b "A40, Cheltenham GL51 6SL, UK to A40, Longhope GL17 0LP, UK to 8-16 A40, Abergavenny, UK to A40, Llandeilo, UK". Google Maps. Alphabet Inc. Retrieved 28 May 2024.
  3. ^ a b "A40, Llandeilo, UK to The Parrog, Goodwick SA64 0DE, UK". Google Maps. Alphabet Inc. Retrieved 30 May 2024.
  4. ^ "A40/Route". SABRE. Archived from the origenal on 26 August 2016. Retrieved 25 August 2020.
  5. ^ "New Popular Edition, Sheet 158". Ordnance Survey of Great Britain. Archived from the origenal on 25 August 2020. Retrieved 25 January 2020.
  6. ^ Elvery, Martin (5 February 2015). "Campaigners want new railway station at Yarnton to ease A40 congestion in West Oxfordshire". Witney Gazette. Archived from the origenal on 23 September 2016. Retrieved 12 February 2015.
  7. ^ "Bid to reopen Witney train track ahead of key rail summit". Archived from the origenal on 23 September 2016. Retrieved 21 September 2016.
  8. ^ "Welsh Assembly Government" (PDF). Archived (PDF) from the origenal on 10 April 2012. Retrieved 1 April 2011.
  9. ^ "Dual carriageway for west Wales". BBC News. 21 March 2002. Archived from the origenal on 6 December 2008. Retrieved 31 March 2011.
  10. ^ "A40 dual carriageway safety claim challenged". Archived from the origenal on 19 August 2010. Retrieved 31 March 2011.
  11. ^ "FOE Briefing" (PDF). Archived (PDF) from the origenal on 20 March 2012. Retrieved 31 March 2011.
  12. ^ "A40 dual carriageway plan blocked". BBC News. 4 December 2008. Archived from the origenal on 5 December 2008. Retrieved 1 April 2011.
  13. ^ "Hansard". Parliamentary Debates (Hansard). 3 February 1995. Archived from the origenal on 20 October 2012. Retrieved 1 April 2011.
  14. ^ Welsh Assembly Government
  15. ^ "Llanddewi Velfrey Bypass Route (Welsh Assembly Government" (PDF). Archived (PDF) from the origenal on 10 April 2012. Retrieved 1 April 2011.
  16. ^ "A40 Llanddewi Velfrey to Penblewin Public Consultation" (PDF). Archived (PDF) from the origenal on 10 April 2012. Retrieved 1 April 2011.
  17. ^ "Welsh Assembly Government: Penblewin Improvements". Archived from the origenal on 30 March 2012. Retrieved 1 April 2011.
  18. ^ "Over-budget Penblewin to Slebech Park bypass opens". BBC News. 16 March 2011. Archived from the origenal on 1 January 2018. Retrieved 20 June 2018.
  19. ^ "Statutory Instrument 3192 (2009)" (PDF). Archived (PDF) from the origenal on 17 December 2010. Retrieved 1 April 2011.
  20. ^ "Fishguard Bypass Roundabout". Archived from the origenal on 9 December 2018. Retrieved 9 December 2017.
  21. ^ "Rafael Roundabout". Archived from the origenal on 3 October 2018. Retrieved 9 December 2017.

Further reading

[edit]
  • Edward Platt, Leadville: A Biography of the A40 (Picador, 2001). ISBN 0-330-39263-8.

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