U. S. 1 ( or the Overseas Highway ) crosses the key at approximately mile markers 9. 5-11, between East Rockland Key and the Saddlebunch Keys.

U. S. 1 ( or the Overseas Highway ) crosses the key at mile markers 29. 5 — 33, one of the few places on the Keys where the road orients north-south ( along the eastern edge of the Key ).

U. S. 1 ( or the Overseas Highway ) crosses the key at approximately mile markers 20. 5 – 23, between Summerland Key and Sugarloaf Key.

U. S. 1 ( or the Overseas Highway ) crosses the key at approximately mile markers 4 — 6, immediately east of Key West.

U. S. 1 ( or the Overseas Highway ) crosses the key at approximately mile markers 65. 5 -- 71, between Fiesta Key and Conch Key.

U. S. 1 ( or the Overseas Highway ) crosses the island at approximately mile markers 24 — 25. 5, between Ramrod Key and Cudjoe Key.

0.039 seconds.