This publication provides Local Authority level breakdowns of statistics on the length of road network receiving maintenance treatment. It details this by road class and type of treatment.
No data files are available for this publication via Westminster Brief. View the full publication on DfT: https://www.gov.uk/government/statistics/data-table-rdc0321-length-of-road-network-receiving-maintenance-treatment-by-road-class-and-type-of-treatment-by-local-authority-in-england