Most Marketable Civil Engineering Concentration

What is the most in demand area of civil engineering right now, especially in California. I know that the best thing is to follow your interests, but I"m curious and to which concentration of civil engineering is the most needed right now.

What does it matter what is the most needed “right now”? If you are just entering the job market, you already have an idea what type of work you want to do. If you are just entering college, the one constant is that the job market will change in 4 years.