Readers sought out ENR's breaking news coverage and in depth analysis of many topics that impacted the construction industry throughout 2021. The COVID-19 pandemic continued to weigh heavily on readers' minds and affected business activities, but there were also several engineering failures that garnered much attention. As we say in the news business: don't bury the lead. In that spirit, this Top 5 list is presented in order of the stories that received the most page views in 2021.