It wouldnt be WSP Development would it? Cos if it is, thats who I work for and infrastructure is what I do! Its well worth it, the company is really good, well set up and very hot on training which means you will be earning nice salaries in no time!
It doesnt get boring, but that is my opinion, I always seem to be doing something different, and the more effort you put in, the better the stuff you get to do.
Go for it! Engineering is a very good line to be in, especially civil engineering!
EDIT: Drainage systems are quite fun actually, they have to be all worked out, and it becomes a big riddle almost... Will you be dealing with highway design as well?