This is an aluminum bridge along a local viewpoint trail. It spans a surprisingly deep gulley and makes travel along the trail possible.
The first try at photographing the bridge with a phone was…not something I would show anyone… The perspectives were way out and looked something like this: \ / on the screen.
The solution was to lower the phone to mid height of the side rails (by sitting on the bridge) and tilt the phone until the vertical posts on each side looked vertical on the phone screen. Then later, looking at the image on a computer screen, a second minor perspective correction was done.