If your city or county is struggling with potholes, cracked asphalt, or worn pavement, you need to know what equipment and technology modern contractors actually use to fix it. The gap between outdated maintenance methods and today's solutions can mean the difference between temporary Band-Aid repairs and lasting infrastructure. Here's what modern street maintenance looks like—and what to look for when hiring contractors for your roads.
Core Equipment for Asphalt Repair
The backbone of street maintenance hasn't changed in concept, but the execution has become far more precise. Pothole patching typically involves a truck-mounted pothole repair unit (also called a spray-injection patcher) that cleans the hole, applies tack coat, and fills it in one pass. Expect contractors to use machines like the Metrovac or comparable infrared heating units for cold-weather work, which warm the surrounding asphalt before adding new material—this creates better adhesion than straight dump-and-tamp methods.
For larger sections, milling machines remove the top layer of worn asphalt (usually 1.5–3 inches). These machines are loud and create significant dust, but they're essential for stripping away deteriorated pavement before resurfacing. A contractor should specify the milling depth in your quote, as this directly affects material and disposal costs.
Advanced Pavement Assessment Technology
Before crews touch a shovel, savvy contractors now use pavement condition assessment tools to diagnose what's actually wrong. Falling weight deflectometer (FWD) testing measures how much a road surface deflects under load—this tells you whether you need a surface patch or deeper subgrade repair. Ground-penetrating radar (GPR) can detect subsurface voids without digging, preventing surprise failures after repair.
Asking for a pavement condition index (PCI) report before accepting a bid is smart practice. This gives you objective data on the extent of cracking, potholes, and rutting across the street, and helps you prioritize repairs by section rather than fixing everything at once.
Seal Coating and Preventive Maintenance
Seal coating extends asphalt life by 2–3 years and costs $0.10–$0.25 per square foot (far cheaper than reconstruction). Modern crews use spray-applied sealers with refined nozzles that lay down even coats without puddling. Some contractors now offer crack sealing as a preventive step—injecting flexible sealant into cracks before they widen and allow water infiltration. This is highly cost-effective when done on roads showing early distress.
Look for contractors who can schedule seal coating in late spring or early fall when temperatures and humidity are optimal. Applying it in wrong conditions leads to poor curing and wasted money.
Concrete Street Repair Tools
For concrete streets or sidewalks, contractors use diamond-blade saws to cut removal boundaries cleanly, then remove broken slabs with pneumatic breakers or excavators. Modern approaches include concrete grinding (removing just the top layer) instead of full replacement for minor spalling, which saves 40–60% versus complete slab replacement.
Technology Integration on Job Sites
Increasingly, contractors use GPS-enabled grading systems for resurfacing work, ensuring uniform thickness across the repair area. Mobile apps allow real-time documentation of work completed, weather conditions, and quality checks—useful if you're managing multiple streets and need accountability.
Some larger contractors now deploy drone surveys for initial assessment and before/after photography, especially for projects spanning multiple blocks or requiring city council documentation.
What to Request in a Contractor Bid
When comparing quotes, ask for:
- Equipment list — What machines will be used and why?
- Depth specifications — How deep will repairs go?
- Curing and traffic reopening timeline — When can residents drive on it?
- Warranty terms — Do they guarantee the repair for 1–3 years?
- Traffic management plan — How will they handle street closures?
- Cleanup scope — Are sweeping, dust control, and debris removal included?
This level of detail separates contractors cutting corners from those doing legitimate work. Platforms like Mercoly help you compare and find trusted Streets & Road Maintenance providers in one place, making it easier to evaluate bids side by side.
Frequently Asked Questions
Q: How do I know if a pothole needs a simple patch versus full-depth repair? If water is seeping underneath the pavement or the hole is larger than 6 inches across and 2 inches deep, a full-depth repair (removing and replacing the entire section) will last longer than a surface patch. A contractor using GPR or an FWD test can determine this objectively.
Q: What's the typical timeline for a street resurfacing project? A single residential block (around 300–400 feet) usually takes 2–5 days from milling through final seal coating, depending on weather and subsurface conditions. Larger projects are scheduled in phases, often requiring lane closures rather than full street closure.
Q: Should we seal coat or mill and resurface our streets? Seal coating buys time and costs less, but if you're seeing alligator cracking (interconnected cracks resembling a crocodile's skin), milling and resurfacing is the only lasting fix—seal coating won't stop underlying pavement failure.
Ready to get your streets assessed? Compare detailed bids from qualified contractors today.