The board of chosen freeholders of any such county wherein lands have been improved, developed and maintained as aforesaid, may:
a. Take or acquire in fee or otherwise by gift, grant, purchase, devise or condemnation, any lands or rights in lands, or easements or interest in lands, within any such county, although the lands so taken or any part thereof, be a public street or way;
b. Construct and maintain along, across, upon and over the same, roads, parkways and boulevards;
c. Grade and improve the same;
d. Regulate the width of streets, roadways, bicycle paths and bridle paths;
e. Plant trees or shrubbery; and
f. Construct and maintain sidewalks and roadways in any part thereof in such manner and of such materials as the board of chosen freeholders shall determine.