Abstract: A gooseneck trailer system with support structures. The trailer system can comprise a gooseneck removably connected to a trailer and a support structure connected to the gooseneck. The support structure can be configured to support the gooseneck when the gooseneck is disconnected from the trailer. In some embodiments, the support structure can comprise at least one support arm connected to a frame of the gooseneck which can be pivoted between a retracted position and at least one deployed position. The present disclosure can also include methods of using the gooseneck trailer system with a tractor such that the support structure abuts against the tractor, safely securing the gooseneck to the tractor.