The project, the bank said, could add a 0.8 percentage point growth to Peru's economy each year of its 30-year life.
And projects in the proposal stage would add 3,020 more units.
The project would also add trees, water and other natural elements to the area.
This project added several decades to the useful life of the bridge.
Others argued that the project would add to traffic problems.
The project will add about 32,000 square feet of gallery space, scheduled to open in late 2007.
In all, the project will add more than 1.4 million square feet and is expected to create 1,500 jobs.
The project would add at least 10,000 people to the area.
The test items developed for this project added further details to the picture.
The $1.2 million project will add 125 parking spots to the current 140.