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Road lengths and conditions

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  • Release date: 31 May 2018
  • Period covered: 2017-18
An annual report showing information by road class.

Total road length in Wales by road classification, 2017-18. Total road length in Wales: 34,800 km; of which 4.9% Motorway & Trunk roads; 7.9% A county roads; 36.9% B and C roads; 50.2% Minor surfaced roads. Source: Welsh Government

Key points

  • The total road length in Wales in 2017-18 was approximately 34,800 km.
  • Powys contains the largest road network of the Welsh local authorities. It accounts for the highest proportion of all A Trunk roads (27.3 per cent), B and C roads (21.1 per cent) and minor surfaced roads (12.2 per cent), resulting in an overall 15.8 per cent of the total road length of Wales.
  • In 2017-18, 4.9 per cent of the motorway network and 1.8 per cent of the trunk road network required close monitoring of structural condition.
  • During 2016-17 Powys had the highest proportion of road network in need of further investigation due to its condition, 18.8 per cent.


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