The contract was awarded earlier this month and is valued at about SR120m ($32m).
Jubail 2 is the extension of Jubail Industrial City, in the eastern region of the country.
The work covers the procurement and construction of a set of bridges to link the part of the industrial city known as the community area with other zones and is expected to take two years to be completed.
Bahrain-based Projacs is the project manager on the work. The Royal Commission for Jubail and Yanbu is the client.
AAD is already working on a bridge project to connect the existing Jubail Industrial Park to the new Jubail 2 Industrial Park.