The new Queensferry Crossing over the River Forth north of Edinburgh is now open (day 1 started as a shambles when a heavy truck broke down in the morning rush hour!!) and the old 1964 bridge is closed except for cyclists and pedestrians. It does appear on Google maps although their directions generator hasn't caught up yet. But there is every chance it won't appear on your GPS for a while. If you are on the A90 just after the M90 merges with it and the signs for Dunfermline/Perth (northbound) or Edinburgh (southbound) disagree with the GPS just follow them - a get your passenger to take a photo of the moment when the GPS shows you driving in a river!!
By the way, the walk across the 1964 bridge is recommended on a fine day, combine it with a train ride on the rail bridge.
edit: forgot to mention, between 1 and 6 September they will be going back to the old arrangement for some special events on the new bridge.