For standardization, those bars on the WDH are called Spring Bars in the manuals and when ordering replacements.
My drive had a heckava dip at the road, so I did as another poster suggested to you and drove to a flat parking spot and installed the spring bars after leaving my driveway. Going in wasn’t a problem so I removed them in my driveway when returning.
I solved my problem when I moved my single trailer axle from on top the springs to under (commonly miscalled “flipping the axle”). However, unlike your’s, my trailer spot was level.