According to some sites:
http://home.earthlink.net/~ghosttowns2/arizona/#_Toc35324969

 It does mention part of this is now private property.

I know Ruby is also off of a County Road but it was purchased and is now
private property with a fee of $12 per person (not carload) to enter.

http://www.ghosttowns.com/states/az/duquesne.html
 DUQUESNE

NAME: Duquesne
COUNTY: Santa Cruz
ROADS: 2WD
LEGAL INFO: T24S, R16E
CLIMATE: Mild winter, Hot summer
BEST TIME TO VISIT: Winter, fall, spring
COMMENTS: The public is not really welcome here say the owners and current
residents. Video available, see below. Take SR 82 to Patagonia and
thereafter drive 20 miles south of Patagonia. Road is paved the first 6
miles and after that is dirt road FR 49. The town is little more then 4
miles south of Mowry.
REMAINS: Many original buildings, mining equipment and the like.

 According to the Santa Cruz County Assessor's office (  (520) 375-8030 ),
this is now private property as part of a new subdivision.

Long and short, I would find another place to take friends...

On Nov 14, 2007 9:43 AM, Andrew Ayre <andy@britishideas.com> wrote:

> Sorry if this is a bit off-topic.
>
> We have some guests from Europe who would like to see ghost towns. My
> favorite is Duquesne, however the last time we went there a guy was
> boarding up windows and wasn't happy we were there. It seems the town is
> private property. However my understanding is that the road through the
> town is FR128 in the Coronado National Forest and that is it a public
> road. So as long as we don't walk off the road we are within our rights
> to stop and look at the buildings (from the road).
>
> I tried calling the Forest Service but they were hopeless. They couldn't
> confirm that the road through the town is public. All they could say is
> that it isn't marked as closed on their map and if the county is grading
> the road then it must be public.
>
> On my 1:24,000 USGS maps the forest roads are not numbered, and I
> couldn't find any maps online that showed this road as being numbered.
>
> Does anyone have any knowledge about this road, or perhaps the number of
> someone in the Forest Service who can give a definitive answer?
>
> thanks, Andy
>
> --
> Andy
> PGP Key ID: 0x67090A54
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