Jon Shave is a Technical Director for WSP and is the lead author of the new DMRB standards CS 466 (management and assessment of concrete half-joints) CS 455 (assessment of concrete highway structures) and CS 454 (assessment of highway structures), among others. He is chair of the BSI committee for the assessment and retrofitting of existing structures, and is a member of the CEN project team developing a new Eurocode for assessment and retrofitting. For over 20 years Jon has supported research, developed best practice, authored standards and led the technical delivery of projects related to the management and assessment of concrete bridges. The assessment of half-joints in bridges has been a particular focus, and Jon has led recent developments in best practice.