I applied in-person. The process took 2 weeks. I interviewed at Whiting-Turner (Charlotte, NC) in Mar 2012
Interview
Met a few representatives at the career fair and made a particular effort to work at the Charlotte office. The interview was very personal and informative of the company. Mostly behavioral.
It was pretty simple, all they were asking was about previous experience questions and asking why interested in the company and industry, definitely judge you on your personality and public speaking.
Pretty straightforward. They mostly ask personal questions rather than behavioral. Make sure you know why you want work there and have a solid answer to “tell me a bit about yourself “
Panel of different interviews with different project managers or vp's. They then ask what you're looking for out of the internship, your experience, and basically make sure you are a good candidate.