Rail extrude UV texture?

Lets say I generate a curved road using a "road cut" polygons, a curve line and rail extrude.
I would like to strech texture on the road so the UV texture coordinates will go along the sides of the road with its curves.
How would I achieve that?
Is there a way to use a curve to strech UV texture coordinates?

Make your UV road section then weld the end polys and use that to extrude. strecth the UV to fit.

600k DIVX UV extrude example