Update: After digging into the Pima County plat maps it appears the trail cuts through private property including at the section of trail where the new sign and fence appeared.
Using the county’s GIS map you can follow the trail from it’s start to finish. As commenter 3Wheeler points out, there are more than 20 pieces of private property that the trail cuts through.
It appears someone who lives along the Urban Assault trail in the foothills of Tucson still isn’t happy about people using the trail.
Several months ago someone placed nails along the trail and now a resident in the area has put up a fence and a no trespassing sign at La Espalda Road. The trail cuts between Alvernon Road and Pontatoc Road from River Road to Skyline Road.
According to several residents in the area, the trail isn’t along private property, but rather an easement along the sewer line that serves the neighborhoods.
One neighbor who walks his dogs along the trail daily said he owns a house that backs up to the easement and homeowners property lines do extend to the trail.
It’s clear frequent users of the trail are now crossing the street about 100 yards to the west where there is another opening.
Some residents has complained about how fast some riders come down the trail.
The neighbor I spoke with said it seemed like a bigger problem in the afternoon, but it wasn’t hard to share the trail.