The Problem
A property owner in Woodside, NY noticed areas of sinking asphalt caused by two large sinkholes, each measuring approximately 12 feet by 12 feet.
After a detailed inspection, our team found that underground voids had formed beneath the asphalt surface. Over time, these empty spaces grew larger, causing the ground to lose support and the asphalt above to settle.
The affected area was located near a drywell, which raised concerns about drainage performance and the possibility of continued soil movement. If left unaddressed, the sinkholes could continue to expand and create safety hazards as well as further damage to the asphalt surface.
The property owner contacted Zavza Seal for a long-term solution that would stabilize the ground and restore the damaged area.
Our Solution
To address the problem, our team developed a repair plan focused on locating the source of the voids, rebuilding the supporting ground structure, and restoring the asphalt surface.
We began by cutting and removing sections of asphalt measuring approximately 12 feet by 12 feet in the affected locations. This allowed us to access the sinkholes and inspect the surrounding area.
Next, we excavated around the drywell to investigate its condition and identify any issues that may have contributed to the soil loss beneath the asphalt.
After completing our investigation, we rebuilt the affected areas using suitable fill materials, including soil, RCA, and gravel where needed. These materials were installed in layers and compacted thoroughly using commercial-grade equipment to create a stable foundation.
As part of the repair, we also elevated the concrete base supporting the steel grate to restore proper alignment and functionality.
Our scope of work included:
- Cutting and removing damaged asphalt sections
- Excavating around the drywell for inspection
- Investigating possible causes of soil loss and void formation
- Adding soil, RCA, and gravel as needed
- Compacting each layer with a heavy-duty commercial compactor
- Raising the concrete base of the steel grate
- Installing new asphalt to restore the surface
The Result
The sinkholes were successfully repaired, and the underground voids were filled and stabilized.
The newly compacted base now provides proper support beneath the asphalt surface, helping reduce the risk of future settlement. The restored steel grate structure and repaired asphalt improved both the safety and appearance of the property.
The property owner now has a stable, durable surface and greater confidence that the area is protected against ongoing ground movement.
Why Sinkholes Under Asphalt Should Be Repaired Quickly?
Sinkholes often begin as small underground voids that gradually grow larger as water moves soil away from beneath the surface. When the supporting soil is lost, asphalt and concrete can begin to crack, settle, or collapse.
Addressing the problem early helps prevent more extensive structural damage and reduces repair costs over time. Proper excavation, compaction, and restoration are important steps in creating a long-lasting repair.
Need Sinkhole Repair in Woodside, NY?
If you notice sinking asphalt, depressions in the ground, or signs of voids forming beneath your pavement, Zavza Seal can provide professional sinkhole repair and ground stabilization solutions designed for long-term performance.