alt Hacker NewsReminds me of the Rinsdorf-Talbrücke in Germany, which got finished last month.
In order to renovate/rebuild the bridge they first built a new half (full lanes) next to the old bridge, collapsed the old bridge, then built the other half where the external half of the old bridge used to be, and finally moved the previously newly built half to join that latter new half, so that the new bridge can take the place of the old one, all of this while parts of it could still be used for traffic.
It is the kind of "German Engineering" which people used to talk about, but sadly our government didn't feel that this was an opportunity to do some proper PR. The Chinese have become experts at this kind of PR.