The first question you want to address is what sort of transportation do you have? Most employers will ask if you have "reliable transportation." They want you to be able to get to work. And, it sounds good if you can volunteer your Plan B. Such as "I am going to take my bike, but, if it's raining my family is close friends with the retired couple next door, and they said they'd be able to give me a lift."
What did you learn from construction that can be used to apply for jobs in fast food? This is what we call "Transferable skills." Yes, you do have skills that relate to both! The answer is team work, and safety! You have to be able to get along with other people. You have to have a good attitude. If someone says "hey, get that hammer for me," you can't turn it into a discussion about "he didn't say please." (you'd be amazed how often that happens!) Safety: Construction is all about hardhats, tying off, proper certifications, OSHA regs, etc. . . Fast food you have concerns about fryers, wet floor signs (to protect the company from lawsuits if a customer falls!), cooking food to the right temperature (food poisoning), etc. Also preventing waste. Maybe you had to plan cuts on a 2x4 in a way so not too much went to the scrap pile. Same concept applies in fast food. Your job is always about making money or saving money for your employer. The purpose of business is to make money.
No, you don't have to do fast food. Perhaps you could get a job at a nursery, or doing landscaping. Or working on a farm or ranch. What I want you thinking about is that you have real experience to offer! Also think about any school activities, such as fundraisers, which you can use in an interview to demonstrate customer service and cash handling experience.
I hope this helps you to think through this. Let me know if you have questions!