Muharraq Island
The four main islands and all the towns and villages are linked by well-constructed roads. There were of roadways in 2002, of which were paved. Multiple causeways stretching over , connect Manama with Muharraq Island, and the Sitra Causeway joins Sitra to the main island. A four-lane highway atop a causeway, linking Bahrain with the Saudi Arabian mainland via the island of Umm an-Nasan was completed in December, 1986, and financed by Saudi Arabia.