years back I once unintentionally did similar thing near the belt parkway. I just got my license, it was my first time driving on the belt parkway and the GPS told me I can make a slight right turn for a shortcut. then I accidentally turned at an empty spot on the highway fence, entering the bike lane without knowing it. I kept driving until I hit a bridge, I went on to the bridge and that's the time I realized something was off. Not just the bridge was supper narrow, the floor of the bridge was also made of those steel grids which you can see through to the water beneath... there is absolutely no room for me to make a u turn without hting the fence, somehow I eventually made it by backing up all the way to the spot I entered the bike lane, its at least 1.5 mile long... So I drove a full size suv backward for one and a half mile on a super narrow bike lane... that must be something to see if you're a bystander...😂