I work for Swift, so you know I don't get the highest pay.
I am currently paying 2 child support orders, one for $90 per week and the other $75 per week.
Some weeks it is hard, and some weeks the one that is coming out of my check is lower - while I get a $0 paycheck.
Most weeks I make plenty enough to put some aside to make it through the weak weeks.
The other is taken from my checking account each week, and in 2 years I have only missed 1 payment.
And I can usually save enough to show my girls a good time when on home time with them, sometimes even a hotel room for each of us.
I had to stay out 11 weeks to do it, but I just saved enough and bought a new $800 laptop.
So yes, you can make enough OTR to pay your child support - as long as it isn't too much over what I'm paying.