I was curious how the free government imagery looked. So I pulled up Oklahoma County and looked around. This is the full resolution of the area. This is the interchange they have been working on for almost 10 years. They are getting close to finished, just another year to go.
Look at the fun jumps and whoop de doos and they added in, and even for the train!
Actually it is just typical "good enough for government work" quality. The Feds hire one of the largest aerial companies on the planet. They have all the data processed in India so our tax dollars get to provide jobs of other countries. The bent roads and are all the fault of the processing the data.
If you look, the bent roads are all over the creek. The actual elevation of the ground is lower than what the surrounding terrain is. And the program is trying to force the pixels into place where the terrain data says it is, but it is wrong. Bridges are a pain to map properly. They got a little sloppy. But dang, it was cheap!