A4059

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A4059
Cameraicon.png View gallery (4)
From: Abercynon (ST089956)
To: Brecon Beacons (SN989182)
Via: Hirwaun
Length: 21.2 miles (34.1 km)
Meets:  A470, A472, B4275, A4233, B4276, A465, A4061, A470
Former Number(s): A4066
Old route now: B4275
Highway Authorities

Powys • Rhondda Cynon Taf

Traditional Counties

Brecknockshire • Glamorgan

Route outline (key)
A4059 Abercycnon - Hirwaun bypass
(A465) Hirwaun bypass
A4059 Hirwaun bypass – Brecon Beacons

Route

The A4059 could be described as a "long way round" road, given it starts and finishes on the A470 (which is only about five miles shorter). It can also be split into two quite different halves, which can be explained by the road's history.

The first half is urban in nature. It starts on the A470 near Abercynon at what is the first flat roundabout for that road north of Cardiff. It heads west, following the various former mining communities along the Cynon valley through Mountain Ash and Aberdare, although most of this now runs on a new relief road avoiding the older built-up streets. The old road is now the B4275 but only west of Mountain Ash; east of there the A4059 still follows its original route.

Towards Brecon

After rejoining its old route in time to go through Penywaun, the road meets the A465 and multiplexes along it between adjacent roundabouts to bypass Hirwaun. The road regains its number to go through Penderyn then changes character completely to a great rural drive over heathland with the Brecon Beacons in full view. It winds back down to the A470, which it meets again at the Beacons Reservoir.

History

The Hirwaun – Beacons Reservoir road was originally numbered A4066. It was changed to A4059 in 1935.

The A4059 did not bypass Hirwaun until the mid 1990s, about 30 years after the A465 did.



A4059
JunctionsAbercynon Roundabout • Hirwaun Roundabout • Rhigos Roundabout
PlacesBrecon • Hirwaun
Related Pictures
View gallery (4)
Abercynon Interchange.pngOld sign on the A4059 in Penderyn to Cwm Cadlan (Cadlan Valley). The metal loop on the top says 'Brecon County', but this area is now in Rhondda Cynon Taff. - Coppermine - 10664.jpgThe A4059 towards Brecon - Geograph - 1169684.jpgThe Lamb Hotel on the A4059 at Penderyn. - Coppermine - 10663.jpg
Other nearby roads
HirwaunA4058 • A4061 • A4066 (Hirwaun - Brecon Beacons) • A465 • B4018 (South Wales) • T76 (Britain)
BreconA40 • A4062 (Brecon) • A438 • A470 • B4520 • B4557 (Brecon) • B4558 • B4559 • B4601 • B4602 • Ffordd Cambria • NCN8 • T75 (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