Yeah, Roman roads were a godsend for many reasons, and in the UK, France, and Italy they formed the routes for pretty much all of the road routes/highways in use today (like the M25), but you guys are deifying them way too much.
Even when new, a Roman road having the average traffic a modern road has? It wouldn't last a few months or so.
Not only are modern vehicles much heavier than anything those roads were designed to accommodate (except for the rare elephant, but, ya know, that's not exactly a normal thing back in Roman times, haha), the wear and tear effect of tires would literally grind down the surface materials to the drainage layers/under materials very quickly.
Remember, Roman roads only had to contend with foot traffic, carts and horses, and... well, that's about it, elements aside.