The extension of North Capitol Street led to significant changes at Prospect Hill Cemetery. A new retaining wall topped by a wrought iron fence and new main gate were constructed on North Capitol Street. Several sets of remains had to be reinterred to accommodate the new construction. Changes in the 1910s to Lincoln Road NE required the construction of a new wall and fence on the east side of the cemetery. Most of the original walls were torn down around 1917, and a new wall constructed. Portions of the wall consisted of ashlar granite blocks of various shades and colors, both coursed and randomly set. Other portions consisted of rusticated or rubble rock of various types (such as granite, greenschist, mica-schist, and other rock). The walls were topped with wrought iron fencing and cast iron finials.