Doha and Bahrain rail link
Doha and Bahrain rail link is part of the creation of a bridge between Qatar and Bahrain. The Qatari Diar Real Estate Investment Company is working with Deutsche Bahn, a German national railroad company, to develop a five rail systems within Qatar. This includes the proposal causeway between Bahrain and Qata, which will link New Doha International Airport, Doha City Centre and Bahrain. The project is expected to cost $25 billion.
The country linking causeway is named the Qatar–Bahrain Friendship Bridge.