City Road Grade Bitumen
Last updated: 2026-10-08
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City Road Grade Bitumen
City road grade bitumen is a penetration-grade or viscosity-grade paving binder that meets municipal road specifications, typically penetration 50/70, 60/70, or 40/50, with a soft-ening point between 46°C and 58°C. For a standard 1 km two-lane city road (7 m wide, 50 mm compacted thickness), you need roughly 420–470 tonnes of bituminous mix, meaning about 25–30 tonnes of neat bitumen at a 5.5–6.5% binder content. Bulk pricing for city road grade bitumen in 2024–2025 ranges from USD 380 to USD 520 per tonne FOB, depending on grade, origin, and packaging.
What Is City Road Grade Bitumen?
City road grade bitumen is the binder used in urban pavement layers — wearing courses, binder courses, and base courses — where traffic loads are moderate, speeds are low, and construction windows are short. Unlike highway-grade polymer-modified bitumen, city road grades prioritize workability, adhesion, and cost efficiency over extreme deformation resistance.
Key characteristics:
- Penetration range: 40/50, 60/70, or 50/70 (0.1 mm at 25°C)
- Softening point: 46–58°C (ring and ball)
- Flash point: ≥ 230°C
- Solubility: ≥ 99.0%
- Ductility at 25°C: ≥ 100 cm
- Density: 1.01–1.06 g/cm³
These grades are produced by vacuum distillation of crude oil and, in some cases, air blowing to hit target penetration.
| Grade | Penetration (25°C, 0.1 mm) | Softening Point (°C) | Best Use in City Roads | Relative Cost |
|---|---|---|---|---|
| 40/50 | 40–50 | 52–58 | Heavy-traffic intersections, bus lanes | Highest |
| 50/70 | 50–70 | 49–56 | Arterial roads, main city streets | High |
| 60/70 | 60–70 | 46–54 | Residential streets, light arterial | Medium |
| 80/100 | 80–100 | 42–50 | Low-traffic residential, footpaths | Lowest |
| 100/120 | 100–120 | 39–47 | Cold climates, patching | Lowest |
Rule of thumb: Hotter climates and heavier loads push you toward 40/50. Cooler climates and light traffic allow 60/70 or 80/100.
Specification Standards: Which One Governs Your Project?
City road bitumen must comply with a national or international standard. The three most cited are ASTM D946, EN 12591, and IS 73. Your choice affects price, availability, and testing requirements.
| Standard | Region | Key Grades | Test Focus | Typical Price Delta vs. IS 73 |
|---|---|---|---|---|
| ASTM D946 | North America | 40-50, 60-70, 85-100 | Penetration, viscosity | +5% to +12% |
| EN 12591 | EU / UK | 50/70, 70/100, 160/220 | Penetration, softening point | +8% to +15% |
| IS 73 | India | VG-30, VG-40 | Viscosity at 60°C | Baseline |
| AASHTO M20 | US (state DOTs) | 40-50, 60-70 | Penetration | +4% to +10% |
Note: VG-30 is the viscosity-graded equivalent widely used in Indian city roads, and it maps closely to penetration grade 60/70 in performance.
- Penetration grading measures hardness at 25°C. Simple, cheap, widely accepted.
- Viscosity grading measures flow resistance at 60°C. Better predictor of rutting performance in hot climates.
- Performance grading (PG) uses a climate-based matrix (e.g., PG 64-22). Higher cost, higher precision.
For most city roads, penetration grading is sufficient. For high-temperature cities (Delhi, Dubai, Phoenix), specify VG-30/VG-40 or PG 64-22.
How Much Bitumen Does a City Road Need?
Binder content depends on mix design (Marshall or Superpave), aggregate gradation, and layer function. Below is a practical planning table.
| Layer Type | Typical Binder Content (% by mix weight) | Thickness | Bitumen per 1,000 m² (tonnes) |
|---|---|---|---|
| Wearing course (BC) | 5.5–6.5% | 40–50 mm | 24–30 |
| Binder course (DBM) | 4.5–5.5% | 50–75 mm | 22–30 |
| Base course (BM) | 4.0–5.0% | 75–100 mm | 28–38 |
| Prime coat | 0.7–1.5 kg/m² | — | 0.7–1.5 |
| Tack coat | 0.2–0.5 kg/m² | — | 0.2–0.5 |
Worked example — 1 km city road, 7 m wide, 50 mm BC layer:
- Volume of compacted mix = 1,000 m × 7 m × 0.05 m = 350 m³
- Mix density ≈ 2.4 t/m³ → 840 tonnes of mix
- Binder at 6% → 50.4 tonnes of bitumen
- Add 5% wastage → ~53 tonnes to order
So a single kilometre of city road consumes 50–55 tonnes of neat bitumen for the wearing course alone. Add binder and base courses and you exceed 150 tonnes per kilometre.
| Grade | FOB Price (USD/tonne) | CIF Price (USD/tonne) | Cost per km (wearing course only) |
|---|---|---|---|
| 60/70 | 380–430 | 420–480 | USD 20,000–23,000 |
| 50/70 | 400–455 | 445–505 | USD 21,500–24,500 |
| 40/50 | 430–490 | 475–540 | USD 24,000–28,000 |
| VG-30 | 390–445 | 435–495 | USD 21,000–24,000 |
| PG 64-22 | 480–560 | 525–615 | USD 26,500–31,000 |
Prices vary with crude oil benchmarks (Brent), freight rates, and drum vs. bulk shipment. Bulk (bulk vessel or flexitank) is typically 8–12% cheaper than drummed.
Buying Guide: Drummed vs. Bulk vs. Modified
Choosing the right supply format matters as much as the grade itself.
- Drums (150–180 kg): Best for small projects, remote sites, and patch work. Higher unit cost, easier storage.
- Bulk tankers / flexitanks (20–24 tonnes): Best for road contractors with heated storage. Lowest unit cost.
- Polymer-modified bitumen (PMB): 25–60% more expensive than neat bitumen, but 3–5× better rutting resistance. Specify for bus stops, intersections, and steep gradients.
- Crumb rubber modified (CRMB): 15–30% premium, good for noise reduction and sustainable city roads.
| Shipping Mode | Typical Lead Time | Minimum Order | Best For |
|---|---|---|---|
| Drummed, container | 18–30 days | 20 tonnes | Small contractors |
| Flexitank, 20 ft | 20–35 days | 20–24 tonnes | Mid-size projects |
| Bulk vessel | 25–45 days | 500–3,000 tonnes | Municipal tenders |
| Bulk tanker (regional) | 2–7 days | 20 tonnes | Ongoing city work |
Payment terms: 30% advance / 70% against B/L is standard for first orders. Repeat buyers often negotiate 100% LC at sight.
Quality Checks Before You Accept a Bitumen Shipment
Rejecting a bad batch is cheaper than repaving a road. Run these tests on arrival:
- Penetration test (ASTM D5): Confirms grade. 60/70 must yield 60–70 units.
- Softening point (ASTM D36): Below spec = rutting risk.
- Ductility (ASTM D113): Below 100 cm signals poor binder quality.
- Flash point (ASTM D92): Below 230°C is a safety hazard.
- Specific gravity (ASTM D70): Detects contamination or dilution.
- Spot test (AASHTO T102): Flags overheated or cracked bitumen.
Request a third-party inspection (SGS, Intertek, or Bureau Veritas) for orders above 100 tonnes. Cost is typically USD 800–1,500 per shipment — worth every dollar.
FAQ: City Road Grade Bitumen
Which bitumen grade is best for city roads?
For most city roads, 60/70 penetration grade or its viscosity equivalent VG-30 is the standard choice. Use 40/50 or VG-40 for heavy-traffic intersections and hot climates, and 80/100 for light residential streets in cooler regions.
How many tonnes of bitumen are needed per kilometre of city road?
A 7 m wide, 1 km city road with a 50 mm wearing course requires roughly 50–55 tonnes of neat bitumen. Including binder and base courses, total consumption rises to 150–180 tonnes per kilometre.
What is the price of city road grade bitumen in 2025?
FOB prices range from USD 380 to USD 490 per tonne for penetration grades 60/70, 50/70, and 40/50. CIF prices add USD 40–60 per tonne for freight and insurance, depending on destination port.
What is the difference between 60/70 and VG-30 bitumen?
60/70 is a penetration-graded bitumen tested at 25°C, while VG-30 is a viscosity-graded bitumen tested at 60°C. Both perform similarly on city roads, but VG-30 is preferred in hot climates because it better predicts rutting resistance.
How long does city road grade bitumen last?
A properly laid city road wearing course lasts 8–12 years with routine maintenance. Using polymer-modified bitumen or VG-40 in heavy-traffic zones can extend service life to 15 years or more.
Calculate Your City Road Bitumen Cost in Seconds
Stop guessing. Use the 6Tar cost calculator to get instant, port-specific pricing for 60/70, 50/70, 40/50, VG-30, and PG grades — including freight, insurance, and drum vs. bulk costs. Enter your tonnage, destination port, and required grade, and get a landed-cost estimate in under 30 seconds. Start your free calculation today.