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Road lengths and conditions

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  • Release date: 8 February 2017
  • Period covered: 2015-16
An annual report showing information by road class.

Total road length in Wales: 34,642km. 1,709km A: Trunk roads and motorway; 2,754km A: County roads; 12,832km B and C roads; 17,347km Minor roads. Source: Welsh Government

Key points

  • The total road length in Wales in 2015-16 was 34,642 km.
  • Unclassified minor surfaced roads contribute approximately half the total road length in Wales.
  • Powys covers by far the largest land area of the Welsh local authorities. It accounts for the highest proportion of all A Trunk roads (27 per cent), B and C roads (21 per cent) and minor surfaced roads (12 per cent), resulting in an overall 16 per cent of the total road length of Wales.
  • The greatest length of motorway is in Newport, which accounts for 19 per cent of the total motorway in Wales.
  • In 2015-16, 4.3 per cent of the motorway network and 5.7 per cent of the trunk road network required close monitoring of structural condition.
  • During 2015-16 Powys had the highest proportion of road network in need of further investigation due to its condition, 20 per cent.


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