Here's a view from the other end. Hmm ... a problem of perspective. The broken lines on the road appear to get l-o-n-g-e-r as they get further away, even though they are in fact all the same length. An optical illusion created by the brain's need to perceive "distance". If it was only possible to view the road from the front, I would just progressively shorten the lines into the distance, but this bridge will also (usually) be viewed from the side. What to do? I may decide to make it a wide 2-lane bridge (with shoulders) and forget about the broken lines.