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Data Provider: Welsh Government National Statistics Road length (Km), by type of road and local authority, Wales
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Year[Filtered]
Measure2
[Collapse]Road type[Filter]
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[Collapse]Road type 1
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[Collapse]Road type 2
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Road type 3
[Collapse]Road Speed[Filter]
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Road Speed 1
[Collapse]Type of carriageway[Filter]
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Type of carriageway 1
[Collapse]Local Authority[Filter]
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Local Authority 1
[Collapse]TotalClick here to sortTotal
[Collapse]MotorwayChanges to motorway lengths from year 2018-19 are due to improved methodology, not to new roads built. Please see key quality information for further details.[Collapse]Total (Excluding Motorway)Click here to sortTotal (Excluding Motorway)
[Expand]Click here to sortMotorwayChanges to motorway lengths from year 2018-19 are due to improved methodology, not to new roads built. Please see key quality information for further details.[Collapse]A County[Collapse]A Trunk[Expand]Click here to sortB and C roads[Expand]Click here to sortMinor surfaced roads
[Collapse]A County[Collapse]A Trunk
[Collapse]All speedsClick here to sortAll speeds[Collapse]All speedsClick here to sortAll speeds
[Collapse]Built-up[Collapse]Non built-up[Collapse]Built-up[Collapse]Non built-up
[Collapse]Total all carriagewaysClick here to sortTotal all carriageways[Collapse]Total all carriagewaysClick here to sortTotal all carriageways[Collapse]Total all carriagewaysClick here to sortTotal all carriageways[Collapse]Total all carriagewaysClick here to sortTotal all carriageways
Click here to sortDual carriagewayClick here to sortSingle carriagewayClick here to sortDual carriagewayClick here to sortSingle carriagewayClick here to sortDual carriagewayClick here to sortSingle carriagewayClick here to sortDual carriagewayClick here to sortSingle carriageway
[Collapse]Wales134.7079.80881.30961.10215.901,675.901,812.002,773.103.40158.40161.80347.101,066.701,413.801,575.60.The data item is not applicable17,756.6034,984.7035,119.40
WalesIsle of Anglesey0.000.0028.1028.100.00117.50117.50145.500.301.601.9032.801.7034.5036.40.The data item is not applicable558.501,224.801,224.80
Gwynedd0.000.0071.5071.500.00259.00259.00330.500.0013.7013.7015.80187.10202.90216.60.The data item is not applicable1,322.202,934.202,934.20
Conwy0.008.8042.8051.608.8065.9065.90117.500.0019.1019.1033.8071.00104.80123.90.The data item is not applicable897.201,802.201,802.20
Denbighshire0.000.0029.7029.705.60104.50110.10139.800.007.207.2014.5050.4064.9072.10.The data item is not applicable623.401,490.601,490.60
Flintshire0.002.7061.4064.1020.6070.0087.90152.000.002.202.2037.308.2045.5047.70.The data item is not applicable687.501,227.701,227.70
Wrexham0.002.7028.0030.7010.3071.7079.30110.000.000.600.6018.7011.4030.1030.70.The data item is not applicable520.101,173.801,173.80
Powys0.000.0034.4034.400.00208.20208.20242.600.0039.3039.307.10383.50390.60429.90.The data item is not applicable2,128.405,509.105,509.10
Ceredigion0.000.0034.4034.400.00123.90123.90158.300.0030.4030.400.4083.3083.70114.10.The data item is not applicable826.102,265.102,265.10
Pembrokeshire0.000.4055.2055.600.40104.90104.90160.500.6019.4020.000.7099.30100.00120.00.The data item is not applicable1,105.602,606.602,606.60
Carmarthenshire4.902.7087.7090.403.80158.10159.20249.600.6019.6020.2046.6079.80126.40146.60.The data item is not applicable1,653.303,665.103,670.00
Swansea15.3017.9052.8070.7023.0026.5031.60102.300.000.000.000.000.000.000.00.The data item is not applicable779.401,112.901,128.20
Neath Port Talbot18.607.4058.9066.3017.2041.9051.70118.000.300.000.3024.900.0024.9025.20.The data item is not applicable599.30858.60877.20
Bridgend17.802.8049.5052.3019.5035.0051.70104.000.000.000.000.000.000.000.00.The data item is not applicable545.80788.80806.60
Vale of Glamorgan3.600.7020.7021.404.7048.5052.5073.900.000.000.000.000.000.000.00.The data item is not applicable593.301,038.301,041.90
Cardiff16.6014.7043.8058.5039.708.7033.7092.200.000.000.006.501.608.108.10.The data item is not applicable888.401,127.001,143.70
Rhondda Cynon Taf9.702.8073.3076.109.8082.3089.30165.400.000.000.0021.707.3029.0029.00.The data item is not applicable930.501,324.601,334.30
Merthyr Tydfil0.000.9021.3022.200.905.405.4027.600.300.000.3019.2017.1036.3036.60.The data item is not applicable222.00339.00339.00
Caerphilly0.001.1029.3030.4018.3049.1066.3096.700.000.000.004.500.004.504.50.The data item is not applicable859.101,177.601,177.60
Blaenau Gwent0.000.0020.2020.200.0030.8030.8051.000.000.000.000.009.609.609.60.The data item is not applicable389.80518.10518.10
Torfaen0.002.1014.1016.203.408.8010.1026.301.300.001.3012.700.0012.7014.00.The data item is not applicable326.10468.00468.00
Monmouthshire22.200.0014.9014.901.1042.7043.8058.700.005.305.3043.1053.4096.50101.80.The data item is not applicable839.001,615.701,637.90
Newport25.9012.109.3021.4028.8012.5029.2050.600.000.000.006.802.008.808.80.The data item is not applicable461.50716.90742.80

Metadata

Title

Road Lengths in Wales

Last update

September 2022 September 2022

Next update

September 2023

Publishing organisation

Welsh Government

Source 1

Road lengths data collection, Welsh Government

Designation

National Statistics

Lowest level of geographical disaggregation

Local authorities

Geographical coverage

Local authorities

Languages covered

English and Welsh

Data licensing

You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see http://www.nationalarchives.gov.uk/doc/open-government-licence

General description

The Motorway and Trunk Roads are the main transport arteries in Wales and they carry the highest volume of traffic per vehicle kilometre. The Welsh Government is the highway authority for the motorway and the trunk road network, whilst all other public highways are the responsibility of the local authority it’s within. These statistics present information about the length and condition of roads in Wales and are based upon financial year.

Data reference periods

1995-96 to 2021-2022

Revisions information

There were no real changes to motorway lengths in 2021-22 but the estimate changed slightly in 2018-2019 because of improved methodology. The majority of local authorities have only had minor changes to the motorway lengths (plus or minus a maximum of 0.2 km) resulting in a combined increase of 0.3 km overall.
The two exceptions are the increases in Monmouthshire and Newport (0.8 km and 0.7 km respectively). These are due to the inclusion of sections of road previously interpreted as slip road; where the M48 joins the M4 in Monmouthshire and where the A48(M) joins the M4 in Newport. These joining lengths are regarded as motorway not slip road because vehicles do not exit one road to join the other, they simply merge together.

Statistical quality

Motorway: Roads identified as M on road signs and which are reserved for use by certain types of traffic only. The A48(M) is included in this group. The data are provided by the Welsh Government's Network Management Division.

A: trunk roads: A trunk roads comprise the national network of strategic routes which cater for the through movement of long distance traffic for which the Welsh Government is the highway authority. The network comprises some of the all-purpose roads (A roads), which are open for use by all classes of traffic, and special roads such as motorways (which are separately identified in the tables). For all other public roads the local authorities are the highway authorities.

A: county roads: also known as Principal classified roads. Roads of regional and urban strategic importance.

B and C roads: also known as Non-principal classified roads. These distribute traffic to urban and rural localities.

Minor surfaced roads: also known as Unclassified. These are local distributor and access roads.

Keywords

Road Length M4