Access free from the DMRB website. Also available from CIS.
The purpose of this document is to provide the requirements for the management of highway structures that have either been assessed to be sub-standard according to the requirements of CS 454 [Ref 1.I] or are deemed to be sub-standard by other methods.
Since assessments are typically based on theoretical calculations and the identification of sub-standard structures without completed assessments are typically based on engineering judgement, such structures do not necessarily pose an immediate and unacceptable risk to safety.
The document also provides requirements and guidance on the use of interim measures.