Diamond Street at Maloney Way to Grant Street showing hump cut progress. The original street height is readily apparent. The foreground features a lowered street and streetcar tracks being put into place. Remnants of the original street height are visible just beyond the plank walkway near the Waggoner Detective Agency. The "hump" cut took place in the area of Downtown known as Grant's Hill. The project began with planning in 1909 and ended with the final cut in 1913. It changed the gradient of Grant Street, Diamond Street, and Oliver, Fifth, Sixth, Webster and Wylie Avenues. Please see, Frederick Law Olmstead, Pittsburgh Main Thoroughfares and the Down Town District: http://digital.library.pitt.edu/cgi-bin/t/text/text-idx?c=pitttext&view=toc&idno=00aep1324m for more information.
