 After Ascoli the road continues towards the Adriatic sea with a rather winding path, where it ends in a junction with SS 16 Adriatica and the Autostrada A14 in Porto d'Ascoli (near San Benedetto del Tronto).Still, such trait has been recently declassed to provincial road, since it has been replaced by Raccordo autostradale 11, a more modern dual carriageway road.Today SS4 is a busy road between Rieti and Passo Corese, as it is the main road link between Rieti and Rome; motorists use it to reach the Autostrada A1 in Passo Corese and continue towards Rome in the more modern road.