possible 1921 Bankhead Highway segment?

I believe that this may also be another segment of the 1921 Bankhead Highway alignment. It veers off from the 1933 US80 alignment (Marsh station Road) just north of the Cienega Creek bridge. This section is still drivable (notice tracks), and I believe it is used for utility easement, as there are buried cables and/or pipes along this stretch.

Note: Technically I was trespassing here, as I was just inside the Cienega Creek Preserve boundary, and should have had a BLM permit.