This report describes a study for the Scottish Road Works Commissioner (SRWC) to collect information on the potential for utility reinstatement works to cause long-term damage to roads. The aim of the study is to collect data that provides evidence of the impact that utility reinstatements have on the serviceable life of a road. It is intended that this evidence base will be used to determine potential contributions from utility companies to the costs of making good long-term damage to roads caused by their works. A revised version of the TRL Inspection Panel Methodology for surfacings was applied to 127 reinstatements located in four different council areas representing rural, semi urban, urban and city environments. All sites contained reinstatements that had been shown to comply with the Specification for the Reinstatement of Openings in Roads (SROR, 2003). Reinstatements ranged in age from between two and ten years. The surveys were undertaken to document the condition of utility reinstatements and their effect on adjacent carriageway pavements. The mean visual condition marks for the sites were analysed and attempts were made to fit linear regression lines, or deterioration trends, to the data. The report provides evidence that utility reinstatements do cause long-term damage to roads. The report also recommends that greater care and supervision is needed in the construction of reinstatement edge joints and suggests a change of detail that would make improvements to joints in the future.

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