Hmmm...have you been there recently to check it out? Can you go there and actually walk on it to check it out to see how safe/unsafe it is? To be honest, if I had been by myself this morning, when I saw that icy stretch, I might have turned around and gone home. Definitely don't want you to do anything that is going to cause injury to you but with this cold weather that we are having, this stuff might not melt until March (like you said the other day). So IF you can do get by safely, I say go for it!