That's fair, and knowing nothing about it at all. Everything has gotten more expensive. The article states that some price index for construction has gone up 67% since 2021. But i have no idea what the cost is of a normal bridge, much less one that has to deal with the added burden of being a wildlife bridge. I assume that made it more expensive because they needed to make sure none of that wildlife/eco system would unnecessarily wear the bridge.
I dunno just my 2 cents