Pothole Prevention & Asphalt Repair for Minnesota Parking Lots

Potholes can be both an eyesore and a pain for those on the road, especially when they damage their vehicles. Therefore, it’s important that if you’re responsible for such potholes, like on private parking lots, you take action, both preventative and repair works, as and when necessary.

The causes of potholes make them inevitable over time, especially in high-traffic areas. However, the more you do to prevent them, the longer you’ll go without needing to do repair work, which can be costly and hassle-some for those who rely on the area to park or drive their car over.

Causes of potholes in Midwest climates

What are some of the common causes of potholes in the Midwest climate? Let’s take a look at some of those causes and the damage they can cause as a result.

1. The freeze-thaw cycle

Unfortunately, it’s Mother Nature that becomes the primary culprit for potholes, and there’s nothing you can do about this freeze-thaw cycle. It begins through water penetration. Snowmelt and rain can seep through existing cracks in the asphalt and into the sub-base, where the gravel and soil layer lies beneath the road. When temperatures begin to drop to below freezing, the trapped water underneath turns to ice and expands. That forces the pavement to lift and crack as a result.

As temperatures rise, the ice melts, leaving a void or weak spot beneath the road’s surface. This whole cycle then repeats multiple times in the Midwest, rapidly weakening the pavement structure.

Traffic and structural failure

Once a void begins to form beneath the pavement, the road surface is no longer supported, which can result in collapse from the weight of passing and parked vehicles, particularly larger ones.  As the impact of cars driving over the hole increases, the asphalt is ejected, making the hole larger and deeper.

Road degradation and maintenance 

Over time, asphalt becomes more brittle and develops cracks due to a mix of age, oxidation, thermal expansion, and contraction.

Another contributor to road degradation is poor drainage. If the roadside drains aren’t maintained, water accumulates in the subgrade and softens, making it easier for pavement to collapse. Poorly repaired trenches from underground utility work create weak points where water can then easily enter the pavement.

How preventative maintenance helps keep parking lots and pavements safe

There are several preventive measures that can be implemented to keep parking lots and pavements safe. 

Crack filling and sealing

As small cracks appear, it’s important to stay on top of them by filling and sealing them promptly. Using a company like Metro Paving helps to avoid water infiltration and keeps the surface smooth, eliminating hazards.

Sealcoating

Sealcoating is worth doing every 2 to 3 years. It acts as a protective barrier against water, oil, and UV rays, all of which make the asphalt brittle.  Asphalt contractors help to keep the surface resilient, improve traction, and also prevent premature surface deterioration as a result.

Regular inspections

For commercial property managers, regular inspections are of great importance. Being proactive with these inspections and having them conducted by professionals like an asphalt and concrete company is essential. It can help identify issues such as damaged speed bumps or broken bollards sooner rather than later.

Regular cleaning and sweeping

Removing dirt, debris, and leaves can help to prevent surfaces from breaking down. It also helps continue to improve safety by ensuring that the pavement hazards are visible.

Drainage maintenance

Effective drainage will help prevent water from pooling, which is a major cause of asphalt degradation. It can also eliminate slipping hazards during warmer months and prevent dangerous and icy patches from forming during the winter.

Re-striping and marking

Faded, invisible, or worn-out line markings can often cause confusion and result in disorganized parking, collisions, and hazardous traffic flow. Regular re-striping ensures that parking spaces, pedestrian walkways, and directional arrows remain visible, improving navigation and preventing accidents.

When it comes to pothole prevention and repairing damage in parking lots, it’s best to be proactive and contact nearby asphalt and paving companies. A company like Metro Paving will help resolve all the issues that come with Minnesota parking lots, so drivers using this lot aren’t doing extensive damage to their vehicles.