The $500,000 restoration and expansion of the upper station of the Duquesne Incline was completed and opened to the public in May 2004.  Working for the Society for the Preservation of the Duquesne Heights Incline, LDA designed an accessible viewing platform which enables the public to get a bird’s eye view of the nineteenth century machinery which operates the incline which until now had been accessible only by maintenance crews.  Visitors can see the assembly of bull wheels, cables, and motors which operate the incline cars.  In addition, LDA specified the exterior restoration of the station and designed an addition to provide more space for offices and support facilities.