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A4042

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A4042
Cameraicon.png View gallery (14)
From:Newport (ST322868)
To:Abergavenny (SO304128)
Via:Pontypool
Length:18.2 miles (29.3 km)
Meets: A48, B4591, A4051, M4, B4596, B4236, B4051, A472, B4269, A40, A465
Former Number(s):A472, A4125
Old route now:A4051
Highway Authorities

South Wales Trunk Road Agent • Newport Council

Traditional Counties

Monmouthshire

Route outline (key)
A4042 Newport - Brynglas
A4042 Brynglas - Abergavenny

Route

Looking south from Pillmawr Road Bridge

The A4042 is an important north-south road in Monmouthshire.

The route begins at a light-controlled junction with the A48 Southern Distributor Road in the south of Newport and travels northwards as Usk Way through the city's docklands. It continues as Kingsway in the city centre and then becomes an elevated roadway known as Heidenheim Drive through the Crindau district. Here the road meets the M4 and J25A, with a spur running alongside the motorway to J25. The A4042 gains primary status from here and continues north as a dual-carriageway road with the occasional roundabout.

The road bypasses Cwmbrân to reach the A472 at Pontypool. It is now the dominant number in a multiplex east until that road turns off at the end of the dual carriageway at Little Mill. The A4042 now becomes a winding single carriageway through a few small villages. Eventually it crosses the River Usk which it ran alongside back in Newport, before ending at a roundabout to the south of Abergavenny, where it meets the A40 and A465.

History

In 1922 the A4042 ran only from Newport to Pontypool. It still follows this route although it has been heavily bypassed and very little is on its original route.

The southern end of the A4042 was on the A48 in the centre of Newport. It then headed north along what is now the A4051 until the end of the dual-carriageway section. A few villages later, it ended on the A472 in Pontypool.

The A4042 was extended north to Abergavenny in 1935 along what was the A4125, although this required a multiplex with the A472. It became the dominant partner in the multiplex when it was deemed the main route, at a similar time to the building of the Cwmbrân Bypass.

At the southern end, the A4042 was extended south of the A48 along what was the A4052 to just past Newport Transporter Bridge. This section was declassified with the building of the current Usk Way, the road's present southern end.



A4042
JunctionsCaerleon Interchange • Grove Park Interchange • Hardwick Gyratory
CrossingsLlanellan Bridge
RoadsT17 (Britain)
Related Pictures
View gallery (14)
Kingsway towards Old Green Crossing - Geograph - 892897.jpgLlantarnam Bypass A4042 (2) - Geograph - 1189267.jpgOld road sign, Llanellen - Geograph - 1289483.jpgThe A4042, looking north - Geograph - 399379.jpgUsk Bridge at Llanellen - Geograph - 1288760.jpg
Other nearby roads
NewportA4051 • A4052 (Newport) • A4072 (Newport) • A437 (Gloucester - Newport) • A449 • A455 (Newport) • A467 • A468 • A48 • A48(M) • A4810 • B4004 (Newport) • B4236 • B4237 • B4237 (Maindee - Docks) • B4238 • B4239 • B4239 (Newport) • B4240 • B4241 • B4242 (Newport) • B4243 • B4288 (Monmouthshire) • B4591 • B4596 • E105 (London - Fishguard) • E30 • EuroVelo 1 • M4 • M4/Newport Southern Bypass • NCN4 • Newport Southern Distributor Road • T10 (Britain) • T103 (Britain) • T17 (Britain) • T78 (Britain)
CwmbranA4051 • B4236 • B4244 • T17 (Britain)
PontypoolA4043 • A4051 • A4125 (Little Mill - Abergavenny) • A472 • B4244 • B4245 (Little Mill - Abergavenny) • B4246 • T17 (Britain)
AbergavennyA40 • A40/Abergavenny - Brecon • A40/Ross - Abergavenny • A4125 (Little Mill - Abergavenny) • A4143 • A465 • A471 • B4233 • B4245 (Little Mill - Abergavenny) • B4247 (Monmouthshire) • B4269 • B4521 • B4598 • EuroVelo 2 • T17 (Britain) • T76 (Britain) • T77 (Britain)
A4000-A4099
A4000 • A4001 • A4002 • A4003 • A4004 • A4005 • A4006 • A4007 • A4008 • A4009 • A4010 • A4011 • A4012 • A4013 • A4014 • A4015 • A4016 • A4017 • A4018 • A4019
A4020 • A4021 • A4022 • A4023 • A4024 • A4025 • A4026 • A4027 • A4028 • A4029 • A4030 • A4031 • A4032 • A4033 • A4034 • A4035 • A4036 • A4037 • A4038 • A4039
A4040 • A4041 • A4042 • A4043 • A4044 • A4045 • A4046 • A4047 • A4048 • A4049 • A4050 • A4051 • A4052 • A4053 • A4054 • A4055 • A4056 • A4057 • A4058 • A4059
A4060 • A4061 • A4062 • A4063 • A4064 • A4065 • A4066 • A4067 • A4068 • A4069 • A4070 • A4071 • A4072 • A4073 • A4074 • A4075 • A4076 • A4077 • A4078 • A4079
A4080 • A4081 • A4082 • A4083 • A4084 • A4085 • A4086 • A4087 • A4088 • A4089 • A4090 • A4091 • A4092 • A4093 • A4094 • A4095 • A4096 • A4097 • A4098 • A4099
Earlier iterations: A4008 • A4013 • A4015 • A4020 • A4032 • A4040 • A4041 • A4044 • A4045 • A4047 • A4050 • A4051 • A4052 • A4053 • A4057
A4060 • A4062 • A4066 • A4068 • A4069 • A4071 • A4072 • A4073 • A4074 • A4080 • A4082 • A4084 • A4085(N) • A4085(S) • A4087 • A4090