[nascarnation]

The article I posted is poorly written. I went back to the Dutch source and found this, which is not trivial, but it's not "demolish" either.

Walravens hopes that with proper preparation, the middle section of the bridge will be removed for just one day.

[GingisK]

They used those vertical parts to erect the bridge in the first place. That operation would be similar to how they assembled the massive crane way at the Newport News shipyard.