Full disclosure: I'm not a road nerd nor a wildlife bio, but I've heard it said that linear features like roads, if intact but unavailable to vehicle traffic, is enough of an advantage to predators like wolves (travel is a big part of their predation strategy so making that part easier makes them more efficient) is bad for ungulates. Obviously a robust population can likely withstand that, but we've got lots of ungulate populations that aren't robust.

It would be good to keep track of roads and have a baseline, but I think they're being added at a very rapid rate. The data may already be collected, but just need to be organized, mind you.