Whats interesting is that this bridge build effectively partitioned the city. You had to drive to the city limits to the ring road, drive around the edge to access that area. The local council found this agreeable, and they rolled out an entire traffic policy, which also reached international attention, that effectively splits the city into sectors, forcing drivers to drive around the crust to get into their destination slice.
My guess is that with modular precast forms, it would be something $500k max!
Somebody pocketed some big amount of cash, I would guess.
Still, there's an undeniable sense of "why is this more expensive to replace than it was to build in the first place?" with a lot of infrastructure in the modern world.