The walkway has now gone many years without maintenance, and is in a
highly deteriorated and dangerous state. It is one meter (3 feet and 3
inches) in width, and is over 100 meters (350 feet) above the river.
Nearly all of the path has no handrail. Some parts of the concrete
walkway have completely collapsed and all that is remaining is the
steel beam originally in place to hold it up. One can latch onto a
modern steel safety-wire to keep from falling, though it can’t hold
much weight. Several people have lost their lives on the walkway in
recent years; after four people died in two accidents in 1999 and
2000[1], the local government closed the entrances. To this day it
remains illegal to cross. However policing is extremely minimal and
many adventurous tourists still find their way onto the walkway to
explore it.
Some travelers choose to begin by walking through the train tunnel to
the dam, and then walking back towards El Chorro. Most climb across a
series of dilapidated stanchions and then up a well-protected chimney
on the cliff face to reach the Caminito del Rey. A cable runs the
length of the path, giving people a method of securing themselves
throughout the duration of the path. However, the stability of the
cable is unknown. It would be wise to have space (more than 10 meters)
between travelers. That way, if a section breaks, the cable will only
be holding the weight of one person.
The regional government of Andalusia budgeted in 2006 for a
restoration plan[2] estimated at € 7 million.

http://en.wikipedia.org/wiki/Caminito_del_Rey