Who has maintenance responsibility for roads other than designated Interstates and state highways?
This depends on the road in question, and can be confusing for some roads. In general, roads not in the state highway system are county roads. However, the state owns and maintains portions of some roads not designated as state highways, where they intersect with numbered state routes. Many other roads are also state-owned, maintained by the state Department of Transportation (not just its Highways Division, but occasionally its Airports and Harbors divisions), or the Department of Land and Natural Resources, among other state agencies. Moreover, the state Department of Hawaiian Home Lands owns some roads, but their maintenance is committed by law to the county governments. A few other roads are maintained by Federal agencies, such as the National Park Service or the Department of Defense. Also, there are many private roads open to the public, some of which are maintained by the counties, some not. Even for some roads in the state highway system, responsibility can be ambiguous (for ex
