Crossword puzzle clue "u k highway connecting london and dover"

U.K. highway connecting London and Dover

County of Dover, Delaware ... or Dover, England

London-to-Dover dir.

Somewhat suspect (and a hint to what can be found by connecting the circled letters in alphabetical order)

___ Bridge, connecting Manhattan, Queens and the Bronx

Canal passage connecting Lake Superior and the lower Great Lakes

Charleston and Dover, e.g.: Abbr.

A ferry runs between it and Dover