They are connected to each other, and to the mainland, by bridges.
It is connected to the mainland by a small bridge.
It is connected to the mainland by a man made bridge.
Since 1966, the island has been connected to the mainland by a road bridge.
It is now connected to the mainland by three bridges.
They are connected to the mainland by several ferry services.
With only one road connecting the keys to the mainland, officials say, at least 30 hours are needed to clear the area.
Probably back when the island was connected to the mainland.
It was originally on an island, but is now connected to the mainland.
The peninsula was connected in two places to the mainland.
