At the press conference, Dr. Al-Seraisry announced that tenders for the railway expansion project will be invited as soon as a contract has been signed with the legal consultant with whom the Saudi Railway Organization (SRO) is negotiating. The Kingdom has already appointed a consortium comprising the National Commercial Bank and the Union Bank of Switzerland to provide financial advisory services for the project. The multibillion-dollar project involves linking Jeddah, Makkah and Madinah to the existing railroad between Riyadh and Dammam. Several international and national companies have expressed interest in participating in the projects. Due to their complexity, SRO expects consortiums to bid for them. According to SRO President Khaled Al-Yahya, the estimated cost is between SR 8 and 10 billion [U.S. $ 2.2 and 2.7 billion], and construction would take three years, with Saudi companies given priority.