It's two separate clauses; the trees run along the road, the avenue is perpendicular to a street. Avenue in the UK, outside newer built suburbs, means tree-lin

It's two separate clauses; the trees run along the road, the avenue is perpendicular to a street. Avenue in the UK, outside newer built suburbs, means tree-lined, explicitly. I used to live on Avenue Road in London, which gets a double take from people used to American naming conventions.