Verb + preposition before a kind of thoroughfare

Hi,

Is it natural to say the followings :

Let's walk down the pedestrian street.

Let's walk down the alley.

Let's walk down /on the trail.

Let's walk down /on the footpath.

Let's walk down / on the sidewalk.

Let's walk down / on the crosswalk.

Let's walk through the pedestrian underpass.

Let's walk over the footbridge.

Thank you very much.