About 20 months after the 1.1-km-long Polcevera viaduct in Genoa, Italy, collapsed and caused 43 deaths, the last span of its replacement went up the week of April 27.
The serpentine approaches of the Gordie Howe Bridge are necessary because of the right-of-way available to the P3 project's designers and the ground, weakened by previous salt mining, has taken extensive remediation to ready it for not one but four projects counting the ports of entry and the new Michigan interchange.