In reply to mvr:
It was open on the 14th December, when I did it last (as it was the 39 other times I went on it last year!).
Just be aware that it is not 'officially' closed. Access is merely restricted to those that have the correct equipment to access it; climbers usually have what it needs to get on it and traverse it. The government of Andalucia have made it difficult to get on it, but have not stopped anyone from doing so, the "information" sign on the way up to it says that "it is intransible and that there is a grave risk", and it says "don't pass, thank you". The local area relys on it being accessible for climbers as they contibute to the local economy. The company that erected it in 1901-1905 still actually own it, andthey have confirmed that they do not an issue with climbers using to access the climbing areas. The difficulty accessing it is to stop Joe Bloggs from easily walking on to it and then falling off.
You can walk the railway lines if you choose too, but there is a hefty fine if you get caught. I have seen the authorities many times patrolling the lines, as well as seen a few people get caught as well.
ES