White spruce - one side of bark decaying

[qwertyjjj]

This tree still looks healthy all the way up, it's about 30metres tall.

However, this area of bark looks badly decayed. There are small holes in it but I'm not sure what they are cased by.

Is there anything I can do to save it?

I also noticed in the tree further up these small balls of twisted branches, which apparently is some type of yellow witches broom rust.

http://s4.postimg.org/bak1wpfh9/IMG_20150329_112842870.jpg

http://s4.postimg.org/dduh4dfa5/IMG_20150329_112847339.jpg

http://s4.postimg.org/czt54rv6l/IMG_20150329_112853649.jpg

http://s4.postimg.org/ezec9xevx/IMG_20150329_112858673.jpg

http://s4.postimg.org/50tdng5gd/IMG_20150329_112905859.jpg

[tree79]

which part of the world are you in? not come across witches broom rust. Reading up on it though you could remove the infected branches depending on how wide spread it is.

With regards to the decay depending on what your target is (surrounding area) will influence what you decide to do with it, but there isn't a great deal to done about from monitor the decay.

It sounds like you have a tall, thin tree?