Costain and Bam Nuttall have been appointed to lead the joint venture constructing a £500m extension to Bristol Port.
The two civil engineering contractors will join dredging specialists Westminster Dredging and Van Oord on the Construct Bristol Terminal (CBT) venture.
Client for the Bristol Deep Sea Container Terminal at Avonmouth, which includes construction of a 1.2km quay, is the Bristol Port Company.
CBT has been engaged under an early-contractor-involvement professional services contract and will carry out detailed site investigation work to reinforce existing records and develop the design, alongside consultants Halcrow.
Simon Bird, chief executive at Bristol Port, said: “The team is able to call upon substantial resources and experience in areas such as quay wall design and dredging which will ensure that the critical programme items are addressed.”
Alan Kay, managing director for Costain Environment, said: “CBT has the experience of delivering major maritime infrastructure and we look forward to working with the Bristol Port Company to make this project a great success.“