What year did the Confederation Bridge open?
The "Official Opening" of the Confederation Bridge occurred on May 31, 1997. There was a "Bridge Run" and a "Bridge Walk" in which an estimated 75,000 people participated prior to the opening of the Bridge for vehicular traffic around 5:00 p.m.
Why was it necessary for the engineers who built the Confederation Bridge to study the climate and storms in the Northumberland Strait before beginning to build?
London Bridge isn't an opening bridge. The only bridge in London which spans the river Thames and can open, is Tower Bridge. If a boat needs to have the bridge opened so that it can pass underneath, it has to book a slot in advance with the bridgemaster who will arrange to open the bridge at the agreed time.