/\ because Cooper was the only firm (being a design/build firm) that had their engineers there and signed off on the drawings saying it could be build, etc. Because the federal funding was time sensitive, they pulled the trigger on what was ready to go. Cooper was, the others were not.
Cities are the most extraordinary human creation. They are this phenomenon which has unbelievable capacity to solve problems, to innovate, to invent, to create prosperity, to make change and continually reform. - Ken Greenburg