A BD20 million contract to set up 13 bridges in Durrat Al Bahrain was signed Saturday. Durrat Khaleej Al Bahrain (DKAB) awarded the contract to Nass Murray & Roberts joint venture. According to The GDN , DKAB chairman Abdul Hakeem Al Khayyat and chief executive Jassim Al Jowder signed the agreement with Nass Group managing director, Samir Nass.