Found 20 Sidewalk CC0 textures in library

Floor Pavement

Grass Path 2

Grass Path 3

Gravel Ground 01

Pavement 02

Pavement 03

Pavement 05

Pavement 4

Road 11

Road 13

Road 15

Road 4

Road Sidewalk

Road Tile 14

Square Concrete Pavers

Stone Tile 12

Tactile Paving 001

Tactile Paving 002

Tactile Paving 003

Walkway 6