Sure, why not? Worst case, they'll know how they got hired.

I've gotten more than one job over the years by doing exactly that. Most people are happy to talk about what they're doing, and meeting someone who appreciates and is interested in it, so much the better!

Find the construction trailer ask for an application. Make sure you can pass a drug test and actually show up for work then I'd say your chances are 50% , 80 % if you find a job site that is just starting construction.

If you want to know where they are building go through Abilene, TX and ask.