The road and the sidewalk are separated by grass. This is not a road I would prefer to ride a bike on at any time of day. It's narrow, unlit, and many motorists drive far above the posted speed limit here.
With my hybrid bike tires, I do not anticipate any distortion caused by the small sidewalk seams, but a venerable certifier I spoke to raised a question about this. I am not certain about comparing because of the aforementioned risk.
Any other thoughts or suggestions - anyone?