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Construction crews remove pavement, test soils as airport pavement work advances
Summary
Consultant Mary Bell told the Broadwater County Airport Board that pavement removal, subgrade excavation and density testing are underway; crews are preparing for gravel and edge drains and will monitor schedule in weekly reports.
Mary Bell of Robert Petch and Associates reported that pavement removal and subgrade excavation at the airport is largely complete and that crews are preparing subgrade, conducting density testing and planning gravel placement.
Bell told the board much of the pavement section has been removed and that previously thin gravel layers (around 3 inches beneath many pavement sections) mean crews will remove and replace deeper sections in areas with poor soils. She said pavement gravel depths vary across the project, with some sections currently measured at about 10.7 inches of gravel and deeper problematic areas up to about 16.9 inches. A geotechnical engineer performed additional density cone penetrometer (DCP) testing to identify soft soils and guide any need to expand deeper removals.
Bell described the current crew as roughly a seven‑person crew doing excavation, compaction and the preparation tasks necessary before gravel is placed. She said crews may install edge drain lines — described to the board as similar to French drains — parallel to pavements to protect the pavement section.
Board members asked whether additional rock or gravel would be required. Bell said the contract quantities include contingencies to cover deeper sections if needed and that the project team planned for areas that may require extra depth. Weekly reports will track schedule risk; Bell said she will report slips and planned catch‑up measures in those updates.
The board also discussed reuse of millings for an existing parking area. County staff and local contractors examined the lot and concluded that, because of equipment on site and grade changes near hangars, additional prep would be required before placing millings. The board agreed the county could later place millings from the project on the existing parking area when site conditions and equipment staging allow.
The board asked staff to monitor schedule performance and present weekly status to the board; Bell said staff will report any schedule slippage and mitigation plans.
