The major cause of extinctions today is loss of habitat. Paving, home construction, golf course development, and farming aren't the only ways that habitat can be lost. Anything that can make an area less attractive or fruitful for a species can cause habitat loss. The simple presence of humans, if too frequent or there are too many of us, can cause wildlife to abandon their preferred habitat, at least for a time. They can be thus deprived of preferred foods, mates, or other resources.
Roads are particularly pernicious, because they can be a physical or psychological barrier.
A species such as the whipsnake that needs cover may be unable or unwilling to cross the road, and hence suffer loss of feeding or mating opportunities. We have destroyed a huge amount of our own habitat, due mostly to the existence of roads and the automobile. Yosemite is now so full of cars that it frequently has to be closed to more visitors. One can easily drive from here to the Sierras without seeing a single piece of land in its natural state. These are nothing but empty words.