10.	Clearing of forest for road corridors destroys wildlife habitat.
9.	Roadkill can have a significant impact on wildlife populations.

8.	Wildlife movement and migrations are fragmented – habitat is broken into smaller and smaller areas.
7.	Illegal hunting and fishing increase due to easier human access into wilderness areas.
6.	Pollution results from road maintenance – many roads are salted and some are oiled to reduce dust. These and other contaminants work their way into adjacent soils and waterways.
5.	Progressive loss of roadless wilderness areas threatens opportunities for remote-based recreation and tourism.
4.	Roads are pathways for invasive plants and animals that compete with native species.
3.	Bridges and culverts can harm wetlands and fish habitat, block migration pathways and pollute water.
2.	Roads accelerate erosion, increase sedimentation, and alter natural streamflow patterns.
1.	Roads increase access for logging, mining, and off-road vehicle abuse.