Just check out the comments (pdf file) of the "Capitol Hill Restoration Society"
It revolves entirely around the idea of REDUCING benefits to society, by obsessing on reducing express road capacity, while saying absolutely nothing about design mitigation, such as cut and cover tunneling. They say nothing about maintaining the division of the 11th Street Bridge interchange and its western portion of the SE Freeway- for the sake of crossing a railroad segment that is planned for removal.
Could it be they prefer this division as a way of segregating their neighborhoods from those to the south?
This is typical of the sort of elitism masquerading as environmentalism, particularly within Washington, D.C., that I wrote about here.