1. Network Rail,Structural Assessment of Under-bridges—Guidance Note, UK, 2006.
2. Danish Road Directorate,Calculation of Load Carrying Capacity for Existing Bridges, Guideline Document, Ministry of Transport—Denmark, 1996.
3. Danish Road Directorate,Reliability Based Classification of the Load Carrying Capacity of Existing Bridges, Guideline Document, Report291, Ministry of Transport—Denmark, 2004.
4. SIA-269,Bases pour la maintenance des structures porteuses, Sociétésuisse des ingénieurset des architects, Switzerland, 2011.
5. CAN/CSA-S6-06,Canadian Highway Bridge Design Code, Canada: Canadian Standards Association, 2006.