The King Fahd Causeway is a causeway connecting Saudi Arabia and Bahrain. The idea of constructing the causeway was based on improving the links and bonds between Saudi Arabia and Bahrain. Surveying of the maritime began in 1968, and construction began in 1981 and continued until 1986, when it was officially opened to the public.
In 1965, the desire to construct the causeway began to take form officially when Shaikh Khalifah ibn Sulman Al Khalifah of Bahrain paid a courtesy visit to King Faisal and the king expressed his wish to have the causeway constructed. In 1968, both countries formed a joint committee to assess the financial undertaking required for the task. As a result the World Bank was requested by the committee to contribute their assistance in methods of implementation of the mammoth-sized project. This required taking into account the environmental and geographical aspects of the Saudi-Bahrain region. In the summer of 1973, King Faisal, in a meeting which included Amir Shaikh Isa bin Salman Al Khalifa as well as the then prince, Fahd bin Abdul Aziz and Shaikh Khalifa bin Salman Al Khalifa, suggested that committee overlook the economic and financial aspects of the project and concentrate on the actual construction of the causeway. In 1975, the World Bank submitted its study and advice after seeking assistance from specialist international expertise in studying the geographic, environmental factors and maritime currents. In the spring of 1976, during a visit by King Khalid bin Abdul Aziz to Shaikh Isa bin Salman Al Khalifa, the two monarchs agreed to set up a ministerial committee from the two countries to work on the implementation of the project.