Roads are always problem when it comes to conservation. Often, they fragment habitat that is already highly disturbed. In Nepal there is the Karnali Highway that, at present, reaches the eastern shore of Rara, a national park. Locals want to extend the highway to allow for easier tourism access. This would help the local economy, which is one of the poorest within the country.
This issue often pops up in poorer countries, do you extend a road to bring in tourism and help the economy at the the risk of harming the health of the environment?
I am presently tired and not thinking straight so will leave it there but for more info go to: http://www.nepalitimes.com.np/issue/2011/04/8/Tourism/18102