How many letters does the top answer for “bridge in marin county” have?

The most common answer is goldengatebridge (16 letters).

Crossword clue: bridge in marin county

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

goldengatebridge 16 letters wd-fact-v3

bridge in northampton county 50% similar → chesapeakebaybridgetunnel

bridge in zadar county 50% similar → maslenicabridge