If your asphalt is cracking, the damage is often caused by water penetration, Utah’s freeze-thaw cycles, oxidation, heavy traffic, poor drainage, or movement in the pavement foundation. Some cracks are minor surface problems that can be sealed, while others indicate deeper structural failure that may require patching or replacement.
Cracks rarely remain the same size. Once an opening forms, water can enter the pavement, weaken the base, freeze during cold weather, and cause the asphalt to separate further. Understanding why asphalt cracks and recognizing the type of damage can help you choose the right repair before the problem becomes more expensive.
Quick Check: What Type of Asphalt Crack Do You Have?
The shape and location of a crack can provide clues about what is happening beneath the pavement.
- Thin, isolated crack: Often an early sign of aging or minor pavement movement.
- Straight crack across the pavement: Commonly caused by temperature changes and contraction.
- Crack running in the direction of traffic: May result from joint failure, settling, or improper installation.
- Large rectangular or block-shaped cracks: Often indicate oxidation and shrinking asphalt.
- Interconnected alligator-shaped cracks: Usually signal structural or base failure.
- Cracks along the pavement edge: May indicate weak support, drainage problems, or vehicles driving too close to the edge.
Small cracks may only need professional crack sealing. Widespread cracking, sinking pavement, or alligator cracking usually requires a more thorough inspection and potentially more extensive asphalt repair.
Learn more about Eckles Paving’s asphalt crack sealing services.
1. Utah Freeze-Thaw Cycles Are Expanding the Cracks
Utah’s freeze-thaw cycles are one of the most common reasons asphalt cracks become worse.
Water enters small openings in the pavement and collects beneath the surface. When temperatures drop below freezing, that moisture expands. As temperatures rise, it thaws and contracts. Repeated freezing and thawing gradually widens cracks, shifts the asphalt, and weakens the foundation.
Freeze-thaw damage is especially common in northern Utah, mountain communities, shaded parking lots, and areas where snow remains on the pavement for extended periods. Cracks that appear small in the fall can become significantly larger by spring.
Sealing cracks before winter helps prevent water from reaching the base and can slow this cycle of deterioration.
Learn more about how Utah weather damages asphalt.
2. Water Is Penetrating the Pavement
Water is one of the greatest threats to asphalt.
Once water enters through an untreated crack, it can erode the aggregate base that supports the pavement. The surface may begin to sink, flex, or break apart as the weakened foundation loses its ability to support traffic.
Common sources of water-related damage include:
- Rain and melting snow
- Poorly placed sprinklers
- Standing water
- Clogged drains
- Improper grading
- Runoff from nearby landscaping
Repairing the visible crack without correcting a serious drainage problem may only provide a temporary solution. When water consistently collects in the same area, the pavement’s slope, drainage system, and underlying base should also be evaluated.
Explore our Utah parking lot drainage services.
3. Sunlight and Oxidation Are Making the Asphalt Brittle
Asphalt contains oils that help keep the pavement flexible. Over time, exposure to sunlight, oxygen, and Utah’s dry climate causes those oils to deteriorate.
This process is called oxidation.
Oxidized asphalt often:
- Changes from black to gray
- Feels dry or brittle
- Develops small surface cracks
- Loses aggregate from the surface
- Becomes less flexible during temperature changes
Sealcoating can help slow oxidation by creating a protective barrier over pavement that is still in stable condition. However, sealcoating does not repair structural cracking or restore a failing base. Existing cracks should usually be cleaned and sealed before a sealcoat is applied.
Learn how professional asphalt sealcoating helps protect Utah pavement.
4. Heavy Vehicles Are Putting Stress on the Asphalt
Commercial parking lots, delivery areas, industrial properties, apartment communities, and loading zones regularly experience pressure from heavy vehicles.
Repeated traffic from delivery trucks, garbage trucks, buses, construction equipment, and other large vehicles can cause the pavement to flex. If the asphalt layer or aggregate base was not designed for that weight, cracking, rutting, and settlement may develop.
Heavy traffic damage often appears near:
- Dumpster enclosures
- Loading docks
- Drive lanes
- Entrances and exits
- Truck turning areas
- Bus stops
Localized damage may be corrected with full-depth asphalt patching. More widespread failure may require milling, an asphalt overlay, or reconstruction with a stronger base and properly designed pavement thickness.
5. The Asphalt Is Reaching the End of Its Service Life
Even well-installed asphalt does not last forever.
As pavement ages, the binder becomes less flexible and the surface becomes more vulnerable to cracking. Older asphalt may develop several types of damage at the same time, including block cracking, raveling, potholes, faded color, and broken edges.
Routine maintenance can significantly extend pavement life, but repeated repairs may eventually stop being cost-effective. A parking lot that has extensive cracking across most of its surface may benefit more from resurfacing or replacement than from continuing to seal individual cracks.
The best solution depends on the pavement’s age, base condition, drainage, traffic level, and the percentage of the surface that is damaged.
Learn more about professional asphalt paving in Utah.
6. The Pavement Foundation Is Failing
Many serious asphalt cracks begin below the surface.
Asphalt relies on a properly compacted aggregate base for support. If the base is too thin, poorly compacted, saturated with water, or built over unstable soil, the pavement may move under traffic.
Signs of base failure can include:
- Alligator cracking
- Repeated potholes in the same area
- Sunken pavement
- Rutting
- Cracks that return after repairs
- Sections that move or flex under vehicles
Surface treatments such as sealcoating will not correct foundation failure. The damaged asphalt may need to be removed so the unstable base can be rebuilt and compacted before new pavement is installed.
7. Poor Drainage Is Weakening the Asphalt
Asphalt performs best when water drains away quickly.
Low spots, improper slopes, clogged drains, and settled pavement can cause water to remain on the surface. That moisture eventually enters cracks and joints, where it can weaken the pavement base and accelerate freeze-thaw damage.
Drainage-related cracking frequently develops around:
- Storm drains
- Gutters
- Landscape islands
- Building downspouts
- Low sections of parking lots
- Edges where runoff collects
If cracks repeatedly form near standing water, correcting the drainage problem is an important part of the repair. Depending on the site, the solution may involve patching settled areas, adjusting the pavement slope, improving drainage infrastructure, or rebuilding part of the parking lot.
8. The Pavement Was Installed Improperly
Premature cracking can occur when asphalt is installed over an inadequate base or without proper compaction.
Possible installation-related causes include:
- Insufficient pavement thickness
- A thin or unstable aggregate base
- Poor soil preparation
- Inadequate compaction
- Improper asphalt temperature during installation
- Weak joints between paving passes
These issues may cause cracking much earlier than expected. The correct repair depends on whether the problem is limited to the surface or extends into the foundation.
An experienced asphalt contractor can examine the crack pattern, pavement movement, drainage, and surrounding conditions to determine whether sealing, patching, resurfacing, or reconstruction is appropriate.
9. Tree Roots or Expansive Soil Are Moving the Pavement
Movement beneath the asphalt can push the surface upward or pull it apart.
Tree roots may lift pavement near landscape islands, sidewalks, and parking lot edges. Certain soils can also expand when wet and shrink when dry, creating movement that contributes to cracking and uneven surfaces.
Warning signs may include:
- Raised pavement near trees
- Cracks radiating from landscaping
- Recurring heaving
- Uneven transitions near sidewalks
- Cracks that continue widening despite surface repairs
Repairs may require removing the affected asphalt, addressing the underlying root or soil condition, rebuilding the base, and installing a new asphalt patch.
10. Snowplows and Equipment Have Damaged the Surface
Snow removal is necessary in Utah, but plow blades can damage pavement that already has cracks, potholes, raised edges, or uneven patches.
A plow blade may catch on a damaged area and remove pieces of asphalt. Repeated scraping can also weaken pavement near utility covers, drains, curbs, speed bumps, and previous repairs.
Damage from snow removal equipment commonly includes:
- Scraped surfaces
- Broken pavement edges
- Dislodged patches
- Widened cracks
- Damage around drains and utility covers
Repairing uneven pavement before winter and clearly marking obstacles can help reduce the risk of additional snowplow damage.
11. Oil, Gasoline, or Chemicals Are Softening the Asphalt
Asphalt is petroleum-based, which means oil, gasoline, diesel fuel, and certain chemicals can soften the pavement binder.
Fresh spills may initially appear as dark stains. Over time, the affected asphalt can become soft, sticky, or crumbly. Traffic then breaks apart the weakened material and creates depressions, cracks, or potholes.
Chemical deterioration is frequently found in:
- Parking spaces
- Gas stations
- Automotive facilities
- Loading areas
- Dumpster pads
- Equipment storage areas
Minor stains should be cleaned promptly. Asphalt that has become soft or structurally damaged may need to be removed and replaced with a patch.
12. Routine Asphalt Maintenance Has Been Delayed
Cracks are more likely to spread when routine maintenance is postponed.
A small crack may only require cleaning and crack sealing when it first appears. If it remains open, water, dirt, vegetation, and debris can enter the pavement. The crack may then widen, branch into surrounding areas, and contribute to potholes or base failure.
A proactive maintenance plan may include:
- Regular pavement inspections
- Timely crack sealing
- Pothole patching
- Drainage repairs
- Sealcoating when appropriate
- Fresh parking lot striping
Maintenance cannot prevent every crack, but it can slow deterioration and reduce the likelihood that minor surface damage will become a major structural problem.
What Happens If Asphalt Cracks Are Not Repaired?
Untreated asphalt cracks typically become larger and more expensive to repair.
A common progression is:
Small Surface Crack
↓
Water Penetration
↓
Freeze-Thaw Expansion
↓
Weakened Aggregate Base
↓
Alligator Cracking or Potholes
↓
Structural Failure
↓
Patching, Resurfacing, or Replacement
Repairing cracks early helps protect the pavement foundation and may extend the useful life of the asphalt. Once the base begins to fail, surface treatments alone are usually no longer enough.
Common Types of Asphalt Cracks and Repair Options
| Crack Type | What It May Indicate | Common Repair Option |
|---|---|---|
| Hairline cracks | Early aging or minor movement | Monitor or crack sealing |
| Longitudinal cracks | Joint separation, settlement, or traffic stress | Crack sealing or localized repair |
| Transverse cracks | Temperature-related contraction | Crack sealing |
| Block cracking | Oxidation and shrinking asphalt | Crack sealing, sealcoating, or resurfacing |
| Edge cracks | Weak edge support or poor drainage | Edge repair and base reinforcement |
| Alligator cracking | Structural or base failure | Full-depth asphalt patching |
| Reflection cracks | Movement from cracks or joints beneath an overlay | Evaluation, sealing, milling, or repair |
| Slippage cracks | Poor bonding between pavement layers | Remove and replace the affected area |
When Should You Be Concerned About Asphalt Cracks?
You should schedule a professional pavement inspection when cracks are widening, spreading across a large area, returning after previous repairs, or appearing alongside sinking, potholes, standing water, or uneven pavement.
Alligator cracking is especially concerning because it frequently indicates failure in the pavement base. Cracks that are isolated and relatively narrow may still be suitable for crack sealing, but delaying treatment allows moisture to enter and increases the risk of more serious damage.
The sooner the cause is identified, the more repair options may be available.
Learn more about asphalt patching and pothole repair in Utah.
Frequently Asked Questions About Cracking Asphalt
Why is my asphalt cracking shortly after installation?
New asphalt may crack prematurely because of an unstable base, poor compaction, inadequate pavement thickness, drainage problems, weak joints, or movement in the soil beneath the pavement. A professional evaluation can help determine whether the cracking is limited to the surface or connected to a deeper installation problem.
Should every asphalt crack be sealed?
Many isolated cracks can be professionally sealed to reduce water penetration. However, alligator cracking, widespread structural damage, and cracks caused by base failure typically require patching or reconstruction rather than crack sealing alone.
Does sealcoating repair asphalt cracks?
No. Sealcoating protects the pavement surface but is not designed to fill or repair significant cracks. Cracks should usually be cleaned and sealed before sealcoating is applied. Structurally damaged areas may need asphalt patching before any protective coating is considered.
Why do asphalt cracks keep coming back?
Recurring cracks may indicate that the underlying cause was not corrected. Base movement, poor drainage, unstable soil, weak pavement joints, or reflective cracking from older pavement layers can cause cracks to return after a surface-only repair.
Can cracked asphalt be repaired without replacing the entire surface?
Yes. Isolated cracks, potholes, and localized failures can often be repaired without replacing the entire parking lot or driveway. Crack sealing, partial-depth patching, full-depth patching, milling, and overlays may all be possible depending on the pavement’s condition.
What time of year is best for repairing asphalt cracks in Utah?
Crack sealing is generally most effective when the pavement is dry and temperatures allow the repair material to bond properly. Spring and fall are often good times to inspect and seal cracks, although suitable timing depends on current weather and pavement conditions.
How quickly should asphalt cracks be repaired?
Cracks should be addressed as soon as practical, especially before winter or extended wet weather. Early repairs help limit water infiltration and reduce the chance that freeze-thaw cycles will widen the damage.
Learn More About Asphalt Cracking and Pavement Maintenance
You may also find these Eckles Paving resources helpful:
- Utah Asphalt Services
- Asphalt Paving Tips & Resources
- Signs Your Parking Lot Needs Repair
- Asphalt Sealcoating vs. Asphalt Crack Sealing
- How Often Should You Sealcoat Asphalt in Utah?
- Best Time of Year for Utah Asphalt Sealcoating
Additional Resources About Asphalt Cracks
For additional information about asphalt pavement, maintenance, and roadway performance, visit:
Request a Free Asphalt Inspection and Estimate
Cracked asphalt does not always require complete replacement, but identifying the cause early can help prevent more extensive damage. Eckles Paving has provided asphalt paving, crack sealing, patching, sealcoating, drainage improvements, milling, and pavement repair throughout Utah for more than 35 years.
Our experienced team can inspect the damaged pavement, determine whether the cracking is limited to the surface or connected to the foundation, and recommend an appropriate long-term repair.
Contact Eckles Paving today to request a free asphalt inspection and estimate.
