preposition
via
VIE-uh/ˈvaɪə/
By way of a particular route or means.
The route reaches the mountain via a small village.

Etymology
Latin via meant a road or way; its ablative form expressed “by way of.” The English preposition retains that route image, whether the passage is through a place or through a particular means.
In context
then being extended to Stansted Airport in 1992. The route had initially run via Abridge and Theydon Bois to Epping