A4042 shield
A4042
A4042 south from Pillmawr Road bridge - geograph.org.uk - 1564988.jpg
Major junctions
North endAbergavenny
Major intersections A40
A465
A472
A4051
M4 J25a
A48
South endNewport
Location
CountryUnited Kingdom
Primary
destinations		Cwmbrân
Road network
← A4041→ A4043

The A4042 is a trunk road that runs from Abergavenny to Newport in south Wales.

Route

Starting at the junction of the A40 and A465 south of Abergavenny, the A4042 travels south towards Little Mill north of Pontypool. This section is a single carriageway and is winding and undulating. From Little Mill onwards the road is dual carriageway, bypassing Pontypool and Cwmbran before crossing the city boundary into Newport. The road has a junction (25A) with the M4 motorway and south from there loses its primary status and becomes an urban road. The first section of which, Heidenheim Drive (named after one of Newport's twin towns), is an elevated roadway through the Crindau district. The road then becomes the Kingsway that passes through Newport city centre, and continues on as Usk Way until its junction with the A48 Southern Distributor Road to the south of Newport.

Junctions

A4042
Northbound exits Junction Southbound exits
Merthyr Tydfil, Hereford A465
Abergavenny, Brecon, Monmouth A40		 Ysbytty Fields Roundabout Start of A4042
Llanfoist B4269 Llanellen Junction Llanfoist B4269
Usk A472 Little Mill Junction Usk, Little Mill A472
Mamhilad Mamhilad Roundabout Mamhilad
New Inn New Inn Roundabout New Inn
Pontypool A472 (A4043) Pontymoile Roundabout Pontypool A472 (A4043)
Cwmbran A4051
New Inn		 Craig-y- Felin New Inn
Cwmbran A4051
Croesyceiliog Croesyceiliog Roundabout Croesyceiliog
Croesyceiliog
Caerleon B4236		 Turnpike Roundabout Caerleon B4236
Llantarnam
Cwmbran		 Crown Roundabout Llantarnam
Cwmbran
Cwmbran A4051 Croes-y-Mwyalch Cardiff A4051 (M4 (W))
Start of A4042 Grove Park London, Chepstow A4042 (M4 (E))
A4042
Northbound exits Junction / Interchange Southbound exits
London, Chepstow A4042 (M4 (E))
Caerleon B4596		 Grove Park Start of A4042
Cardiff A4051 (M4 (W)) Harlequin Cardiff A4051 (M4 (W))
City Centre
Civic Centre B4591
Exit only		 Old Green Interchange Access only
Cattle market
Old Town Docks		 Octopus Bridge Old Town Docks
Superstore
Start of A4042 Old Town Dock (M4 (E)), Pilgwenlly, Docks, (M4 (W)) A48
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

    {{navbox |name = Motorways and Trunk Roads in Wales |basestyle = background: firebrick; color: white; |title = Trunk roads in Wales |listclass = hlist |groupstyle = text-align:center; |image = |state= collapsed |group1 = Managed by the
    North and Mid Wales
    Trunk Road Agent |list1 =

    • Bangor - Chirk Trunk Road (A5)
    • London - Fishguard Trunk Road (A40)
    • Newtown - Aberystwyth Trunk Road (A44)
    • Holyhead - Chester Trunk Road (A55)
    • Shropshire Boundary - Mallwyd Trunk Road (A458)
    • Cardiff - Glan Conwy Trunk Road (A470)
    • Glanusk Park (Crickhowell) - Llyswen Trunk Road (A479)
    • Swansea - Manchester Trunk Road (A483)
    • Fishguard - Bangor Trunk Road (A487)
    • Newtown - Machynlleth Trunk Road (A489)
    • Dolgellau - South of Birkenhead Trunk Road (A494)

    |group2 = Managed by the
    South Wales
    Trunk Road Agent |list2 =

    • M4 motorway
    • M48 motorway
    • A48(M) motorway
    • London - Fishguard Trunk Road (A40)
    • Chepstow - Carmarthen Trunk Road (A48)
    • Newport - Worcester Trunk Road (A449)
    • Neath - Abergavenny Trunk Road (A465)
    • Chepstow - Monmouth Trunk Road (A466)
    • Cardiff - Glan Conwy Trunk Road (A470)
    • St Clears - Pembroke Dock Trunk Road (A477)
    • Swansea - Manchester Trunk Road (A483)
    • Fishguard - Bangor Trunk Road (A487)
    • Newport - Shrewsbury Trunk Road (A4042)
    • East of Abercynon - East of Dowlais Trunk Road (A4060)
    • Haverfordwest - Milford Haven Trunk Road (A4076)
    • A4232 Trunk Road (Capel Llanilltern – Culverhouse Cross Link Road) (A4232)

    |group3 = Related topics and
    further information |list3 =

    | belowclass = hlist | below =

    51°43′05″N 2°59′29″W / 51.71809°N 2.99137°W / 51.71809; -2.99137

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