Fact Sheets 9 Things to Know About... Aesthetics Principles Breadcrumb Home Fact Sheets 9 Things to Know About... Aesthetics Principles See All Discover More 2022 Community Organization Investment: Funded Initiatives Construction Update: Winter 2022 English Español Backgrounder - Steps in Gordie Howe International Bridge Tower Construction The towers of the Gordie Howe International Bridge have been under construction since 2019. Each bridge tower is an inverted “Y shape and made of cast-in-place reinforced concrete.