Figures are based on database of 170 large infrastructure projects planned between 1960 and 2014. 119 were finished projects while 51 were still underconstruction at the time of the study.
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Average cost overrun in transport infrastructure projects 1960-2014, by type
This graph shows the average cost overrun of transport infrastructure projects undertaken around the world between 1960 and 2014, by project type. Rail infrastructure construction projects had an average cost overrun of ** percent, the highest of any project type.
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Hertie School. (May 31, 2015). Average cost overrun in transport infrastructure projects around the world 1960 to 2014, by project type [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 02, 2026, from /statistics/526809/transport-infrastructure-projects-average-cost-overrun/
Hertie School. "Average cost overrun in transport infrastructure projects around the world 1960 to 2014, by project type." Chart. May 31, 2015. ÌÇÐÄÆƽâ°æ. Accessed August 02, 2026. /statistics/526809/transport-infrastructure-projects-average-cost-overrun/
Hertie School. (2015). Average cost overrun in transport infrastructure projects around the world 1960 to 2014, by project type. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 02, 2026. /statistics/526809/transport-infrastructure-projects-average-cost-overrun/
Hertie School. "Average Cost Overrun in Transport Infrastructure Projects around The World 1960 to 2014, by Project Type." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 May 2015, /statistics/526809/transport-infrastructure-projects-average-cost-overrun/
Hertie School, Average cost overrun in transport infrastructure projects around the world 1960 to 2014, by project type ÌÇÐÄÆƽâ°æ, /statistics/526809/transport-infrastructure-projects-average-cost-overrun/ (last visited August 02, 2026)
Average cost overrun in transport infrastructure projects around the world 1960 to 2014, by project type [Graph], Hertie School, May 31, 2015. [Online]. Available: /statistics/526809/transport-infrastructure-projects-average-cost-overrun/
