Harrisburg Area Community College Parking Lot Rehabilitation Plan

RETTEW developed a parking lot rehabilitation plan for a 17-acre tract at the Harrisburg Area Community College’s (HACC) Harrisburg Campus. Prior to this project, a parking lot pavement evaluation and a geotechnical engineering investigation were performed to evaluate the conditions of the pavement and the subsurface area. RETTEW determined the parking lot rehabilitation required full-depth reclamation because of the existing conditions.

RETTEW analyzed and redesigned the access and internal circulation of the parking lot, improving vehicular and pedestrian flow. We surveyed the project area using a drone supplemented with a field survey. Utility evaluations included recommendations for existing stormwater and electric facilities. RETTEW addressed stormwater management with proposed collection and conveyance facilities, as well as rain gardens and infiltration socks/berms, to provide a water quality component. Using field and aerial data, we prepared the stormwater management plan, erosion and sediment control plan, as well as construction documents, and coordinated the plan approvals through the review agencies.

The stormwater management reduced the amount of impervious area, which benefited the adjacent Paxton Creek. By redesigning the 17-acre parking lot, RETTEW relieved egress traffic congestion for HACC, improving pedestrian safety and increasing the efficiency of traffic flow.

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