My turn on the lathe:
Reconstructing the bridge will be extremely expensive, so the entity that owns it, will instead sell off the bridge and property.
The buyers will start a company that will basically be a Uber-like ferry service that will cost a lot of money to get to the other side. These Uber ferries will only be able to take maybe 8 cars at a time and just getting on board during rush hour will take hours because of the permanent traffic congestion on both sides.
Also, one of the ferries will tip over and drown 6 families because the owners didn't to the math for what happens when a fully loaded truck, carrying ball bearings, parks on the upper deck on a boat that can only carry up to 8 sedans.
Oh, so it's fine to say "moshi moshi desu ~", but when i say "onii-chan daisuki" people call the cops