Hi gst,
Thank you.
Yeah, I think in some cases admission can still be possible, depending on your background. If you have some work experience or something else related to Civil Engineering, these things may help to compensate what you are missing. At least in my case, I believe, it could have been like this. I had several relevant publications and several years of relevant work experience which played their role. I don't know which admission factors your department consider as important, but I believe, overall, you have a chance.
EDITED:
However, I want to add, I think that lacking more than 30 credits definitely places you application at disadvantage and you may become candidate for rejection immediately. I was not missing too much as well, around 30-35 credits, and nobody knows how they counted them, maybe they counted them "friendly" so that I fully satisfied their requirements. I think there is also some luck and it will highly depend on the person who will be evaluating your app. One person may like your app while another not.
Hope this help.