The road of repeating segments with a seamless texture. You can modify the shape and direction of the segment as desired with Path Deform, Bend, FFD (Box) modifiers, Railclone plugin, etc.
The width of the sidewalk is 5.7 meters (2.5m area without heaps), length - 8 meters.
High resolution textures:
Diffuse-8192 * 4096px;
Displacement (32-bit EXR), normal, specular, ambient occlusion-4096 * 2048px.

Vray 3.0, Blinn reflections, VrayBlend, Vray transluncency (disable trace refraction to speed up rendering), VrayFlakes, VrayDisplacementsMod and VrayNormalMap (switch them for near / far frames).
Corona 1.6, CoronaDisplacementMod, CoronaNormal.
2816 polygons per segment.

FBX files do not contain DisplacementMod.