Science

First of all, for MS, you profile matters the most. Whatever the project you handled, work experience or internships make your MS plan bit easier. Even if your profile is not that amazing, still there's a chance so that you should score GRE impressively (320+ is better). Your good SOP (statement of Purpose), well defined letter of recommendation from at least two universities will help you to be considered that you're capable of handling the program they offer. TOEFL is mandatory to get into any college/university. And some universities accept IELTS as well. As you want to go to Germany, you need to learn German language and you must have 'A1' certificate.
Secondly, check out for good universities/colleges that offer MS in Civil Eng.
TUM, University of Stuttgart, Dresden University, HTW Berlin, these are some of the good colleges for Civil Eng. Top university and the one which offers innovative course will help your future.
And search for good university in other country also, where you can find more career opportunities.
Good Luck!