Does a 3500 dodge flat bed with goose neck trailer need a cdl driver?

This question is very situation dependent. If it is considered a commercial use vehicle which does not fall under the exemptions for farm vehicles, emergency vehicles, recreational vehicles, or military vehicles AND meet ALL of the corresponding criteria for those exemptions, it will require a Class A CDL is the Gross Combined Weight Rating is more than 26,000 lbs. and the trailer has a GVW in excess of 10,000 lbs.