The glia limitans perivascularis abuts the perivascular space surrounding the parenchymal blood vessels and functions as a supportive constituent of the blood brain barrier.
Sometime between 18951924, the lateral altars, originally covered in azulejo tile was removed and the walls that abutted them were plastered in cement.
Several streets and private driveways abut the road throughout its length, with right-in/right-out access; however, no traffic may cross the highway at grade.