Flatbush Dude,
You may not have noticed it, but most of those jobs are managerial jobs. In other words, you generally have to have been working in the trade for several years before you can qualify for the job. You can’t walk in off the street with no experience in the construction business and say that you want to be a construction manager.* In this case, it’s simply replacing the years in college with years of work experience.
The Wolf
* Well, I suppose you can, but odds are well against you getting the job.