Train going over a wooden trestle bridge along the Brushy Creek Trail

The train was both fascinating and terrifying at the same time. This huge heavy train rolling fast over an old wooden trestle bridge. I was standing just a few feet from the tracks when it went over.
The bridge was originally built in the 1880's as a narrow gauge railroad line with the sole purpose to haul big "Texas Pink Granite" blocks from a quarry to masons to be crafted into blocks and then ultimately transported by train to the site of the construction of the Texas Capitol building.
During that period one of the trains derailed sending a bunch of these blocks into the creek. They still lay there to this day since it wasn't worth the effort to retrieve them since they were getting all the stone for free.
As the train goes over the bridge you can see the wood flex.

[@fincher42]

That is amazing! Especially that it has lasted all these years.

[@MrJack1992]

Wood if properly maintained and you have objects going against the grain it can withstand the stresses of heavier loads then steel and as seeing the US has more domestic lumber mills than steel mills lumber is cheaper and stronger than most affordable steel.

[@kelter1027]

Wow watching the wood moving is just crazy! I wouldn't want to be on it.

[@epontius]

yeah. Funny thing was I didn't really notice it at first. I had made my way up to the top of the tracks and was just taking in the view a bit when I noticed the train approaching further down the tracks. I thought a shot of the train going over the track would make a cool photo. So I stood right at the edge below the tracks and lined up a shot and then took a few photos with my phone as it started to go over. It wasn't until I kind of stopped taking pictures that I noticed right next to me that the wood was moving and flexing. So I took some video to show it.