Which preposition to use with unpaved

behind Occurrences 1%

The street which was completely unpaved behind the barricade, was nothing better than a sewer, ankle deep in water.

for Occurrences 1%

All the streets are paved with stone, as are all the highways in the kingdom of Mangi, only a space on one side being left unpaved for the use of the foot posts.

Which preposition to use with  unpaved