04 May Yerba Buena Island – Ramps Posted at 09:30h in Case Studies by webmaster 0 Likes The project involves the construction of new on/off ramps at the northeast side of the island’s westerly approach. Transamerican Engineers (TAE) will provide construction staking and surveys as required throughout the project. Project Duration Project Duration: 2013-2016Date Completed: 2016 Construction Cost Construction Cost: $60,000,000Contract Budget: $902,589