I think any gps device of the top three (garmin, tomtom and magellan) will do what you are looking for. It's a very basic feature.
That's basically it. Looking for a GPS that allows avoiding highways, bridges and tunnels. All 3. I don't care much about any other features.
Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic