1. American Society of Civil Engineers (ASCE), “2013 Report Card for America’s Infrastructure, Bridges,” ASCE, 6 May 2013, http://www.infrastructurereportcard.org/a/#p/bridges/overview (20 February 2017).
2. Status of bridge failures in the United States (1800–2009);Sharma,2011
3. Federal Highway Administration (FHWA), “Bridges & Structure, National Bridge Inventory (NBI),” FHWA, 3 August 2016, https://www.fhwa.dot.gov/bridge/nbi.cfm (20 February 2017).
4. Federal Highway Administration (FHWA), “Bridge Inspector’s Reference Manual,” FHWA, December 2012, https://www.fhwa.dot.gov/bridge/nbis/pubs/nhi12049.pdf (20 February 2017).
5. Reliability of visual inspection for highway bridges, volume I: Final report;Moore,2001