On the south side of the San Joaquin River, crews are finishing up construction of pier caps to tie together the support columns. The construction of the deck that will carry high-speed trains has also begun to link all the structures together. Concrete has also been poured for the pergola section at the southern end of the work area where high-speed trains will cross over the existing freight line. The completed viaduct will form one of the largest structures on this first phase of the high-speed rail project.