The purpose of this project was two-fold: to reconstruct pavement that was more than 25 years old and to improve airfield safety by remediating a “hot spot” resulting from intersecting runways. During the course of this project, Parkhill had to relocate a 72-inch water supply line, a 20-inch, high-pressure gas line and a major electrical duct bank. All of these utilities were relocated to a deeper depth and designed to accommodate aircraft loading since each crosses beneath the extended runway.

Pavement work included extending Runway 08/26 and Taxiway J, construction of the new Taxiways G and P, overlay of the existing runway, and the extension of the airport perimeter road. All-new, full-strength pavement was comprised of 16-inch, P-501 concrete on 4-inch, P-401 asphalt.

This project was unique in that the existing runway pavement was not fully removed and replaced. Utilizing heavyweight deflectometer and ground-penetrating radar data – in conjunction with standard geotechnical boring information – the Parkhill team determined that the existing pavement section was sound and could perform well as a base for the new pavement. The unbonded overlay design included a 2-inch P-401 hot mix asphalt bond breaker, a heavy-duty drainage fabric interlayer and 8 inches of jointed P-501 concrete pavement. A parallel-edge drainage system was installed along all new pavements and along the overlaid runway.

Finally, the project required detailed coordination and communication for the relocation of the FAA-owned MALSR, glide slope and localizer as well as installation of new PAPI-4s, edge lighting and airfield signage.