1. AASHTO. 2019. Manual for Bridge Element Inspection (MBEI). Washington, DC: AASHTO.
2. ClimaTemps. 2021. “Climate United States—Monthly averages.” US Climate Data . Accessed June 1 2021. https://www.usclimatedata.com/.
3. Crampton, D., K. Holloway, and J. Fraczek. 2013. Assessment of weathering steel bridge performance in Iowa and development of inspection and maintenance techniques. Ames, IA: Iowa DOT, Office of Bridges and Structures.
4. FHWA (Federal Highway Administration). 1989a. National bridge inspection standards. McLean, VA: Office of Infrastructure Research and Development.
5. FHWA (Federal Highway Administration). 2017. Improving transportation investment decisions through life-cycle cost analysis. McLean, VA: Office of Infrastructure Research and Development.