However , for 1,000 years after the Romans there was little need for major roads .
The Romans established a route , Via Julia Maritima , to service their garrisons across South Wales and this is followed largely by the present A48 .
For 1,000 years after the Romans there was little need for major roads .
The Romans established a route , Via Julia Maritima , to service their garrisons across South Wales and this is followed largely by the present A48 .