I found a way to get road plates for about half the cost of the boxed road packs. Needless to say this can be a huge savings for anyone needing a large quantity of plates for their Lego City.
If you go to BrickLink and search these part numbers you will find the four main components that are most desired from the road pack. You will want to filter them based off your region and the quantity you are seeking.
Crosswalk 71772pb01
https://www.bricklink.com/v2/catalog/...
Road plate 69958
https://www.bricklink.com/v2/catalog/...
2x4 tile with stripe 87079pb0821
https://www.bricklink.com/v2/catalog/...
2x4 tile no stripe 87079
https://www.bricklink.com/v2/catalog/...