We completed final design of an access road connecting Riverview Road to the pumphouse site for the Old Dominion Electric Cooperative (ODEC) Wildcat Point Generation Facility. Design of this 3,200-foot access road was challenging because of topographic changes along the project site. The roadway has a vertical elevation ranging 250 feet over the entire project length and required vertical cuts of more than 35 feet over geotechnical areas consisting of disintegrated rock and schist. Over 30,000 square feet of wall was required to construct the roadway and pumphouse site. The road typical section required 1,200 feet of guide rail conforming to the Pennsylvania Department of Transportation (PennDOT) construction standards to accommodate the steep side slopes of the existing terrain.
Stormwater design requirements followed City of Fullerton, Pennsylvania, township requirements. A swale on the upside slope of the typical section was incorporated to capture run-off from the asphalt pavement. The design added three crossroad pipes for overland flow and erosion-control devices at discharge points.
As part of the design concepts, we analyzed more than seven horizontal and vertical profiles for the access road. The effort required close coordination with Norfolk Southern because the site was adjacent to the railroad. To provide access to the site from the north, the design included a single-lane, single-span, 50-foot steel I-girder bridge, which incorporated guiderail along the edge of the bridge deck.