road

道路(どうろ)	Any road big enough for a dinky car.

通り(とおり)	Big-ass road. Avenue.

街道(かいどう)	Highway, or main road.

道(みち)	The most broad, most common word for road. But unless you specifically say 大きい道 or デカイ道, people will tend to picture a small, 2-lane road. $$$