Begun in 1898, the Denny Hill Regrade leveled one of Seattle's steepest hills, with an aim to connect neighborhoods and facilitate traffic flow. Before the regrade, Second Avenue rose 190 feet in the twelve blocks between Pioneer Square and Lenora Avenue. The project began by flattening First Avenue between Pine Street and Denny Way. The sluiced-away dirt was dumped into Elliott Bay or used as filler on downtown streets. In 1928, when this map was created, the remaining portion of the hill was leveled using electric steam shovels and by the end of the project in 1931, Denny Hill had been flattened and the Denny Regrade neighborhood was born.

On this map of the Denny Regrade District, published by Kroll Map Company, areas of down grade are indicated by arrows noted with a grade percentage; cuts are indicated with a number inside a circle; and fills with a number inside a rectangle.

Caption information source: "Engineering Department Denny Hill Regrade Photograph Albums, 1904-1929," Seattle Municipal Archives. Retrieved from http://archiveswest.orbiscascade.org/ark:/80444/xv95087/op=fstyle.aspx?t=k&q=denny+regrade on April 22, 2019.