Structure & Cost Comparison


Compare the cost, environmental, and structural benefits of recycling to conventional reconstruction or mill & fill.

When roads are facing significant deterioration, many pavement owners globally are adopting a recycling-first approach to achieve significant cost saving and critical structural gains, while reusing resources in-place from pavement they’ve already bought. A recycling-first approach saves time, reduces delays and increases environmental benefit.

See for yourself with the example treatment comparisons below.

CIR vs. Mill & Fill


Existing Road
Condition

Existing Layer Type Depth (in) Co-Eff SN
HMA Wearing Course 2 0.20 0.40
HMA Base Course 4 0.20 0.80
SubBase / Granular Base 8 0.12 0.96

Approximate SN

(Structural Number) 2.16
vs.

Conventional: Mill & Fill

Many agencies are learning that the use of limited funds toward a “worst first” approach accelerates the decline of their overall network, as miles of good roads go untreated each year.

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Layer Type Depth (in) Co-Eff $/SY SN
3" HMA Mill & Fill 3 0.44 $16.64 1.32
Remaining Asphalt (Existing) 3 0.20 - 0.60
Granular Base (Existing) 8 0.12 - 0.96

Optimized: Cold In Place

Consider an Optimized approach, which reallocates funds across more efficient strategies to keep good roads good and help you get ahead of the curve.

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Layer Type Depth (in) Co-Eff $/SY SN
Thin Lift HMA 1 0.44 $6.97 0.44
Cold-In-Place Recycling 3 0.35 $6.70 1.05
Remaining Asphalt (Existing) 3 0.20 - 0.60
Granular Base (Existing) 8 0.12 - 0.96

When compared to conventional methods, CIR can achieve...

  • up to 90% fewer greenhouse
    gas emissions
  • 100% of onsite
    materials used
  • 20-40% faster construction
    completion times
  • 15-20 years of added
    pavement life
  • 98% of hauling
    totally eliminated

HIR vs. Mill & Fill


Existing Road
Condition

Existing Layer Type Depth (in) Co-Eff SN
HMA Wearing Course 2 0.20 0.40
Remaining Asphalt (Existing) 5 0.03 1.5
Granular Base (Existing) 8 0.14 1.12

Approximate SN

(Structural Number) 3.02
vs.

Conventional: Mill & Fill

Many agencies are learning that the use of limited funds toward a “worst first” approach accelerates the decline of their overall network, as miles of good roads go untreated each year.

Scroll horizontally to view table

Layer Type Depth (in) Co-Eff $/SY SN
2" HMA Mill & Fill 2 0.44 $12.07 0.88
Remaining Asphalt (Existing) 5 0.30 - 1.5
Granular Base (Existing) 8 0.14 - 1.12

Optimized: Hot In Place

Consider an Optimized approach, which reallocates funds across more efficient strategies to keep good roads good and help you get ahead of the curve.

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Layer Type Depth (in) Co-Eff $/SY SN
Thin Lift HMA 1 0.44 $6.97 0.44
Heater Scarification 1 0.43 $4.11 0.43
Remaining Asphalt (Existing) 5 0.30 - 1.5
Granular Base (Existing) 8 0.14 - 1.12

When compared to conventional methods, HIR can achieve...

  • up to 30% fewer greenhouse
    gas emissions
  • 100% of onsite
    materials used
  • same day return to traffic
  • 7-15 years of added
    pavement life
  • 98% of hauling
    totally eliminated

FDR vs. Reconstruction


Existing Road
Condition

Existing Layer Type Depth (in) Co-Eff SN
HMA 4 0.20 0.80
Granular Base (Existing) 8 0.10 0.80

Approximate SN

(Structural Number) 1.6
vs.

Conventional: Reconstruction

Many agencies are learning that the use of limited funds toward a “worst first” approach accelerates the decline of their overall network, as miles of good roads go untreated each year.

Scroll horizontally to view table

Layer Type Depth (in) Co-Eff $/SY SN
HMA 4 0.44 $21.26 1.76
Granular Base 8 0.14 $17.75 1.12

Optimized: Full Depth Reclamation

Consider an Optimized approach, which reallocates funds across more efficient strategies to keep good roads good and help you get ahead of the curve.

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Layer Type Depth (in) Co-Eff $/SY SN
HMA 3 0.44 $15.94 1.32
FDR w/ Cement 8 0.20 $9.50 1.6
Granular Base (Existing) 4 0.10 - 0.40

When compared to conventional methods, FDR can achieve...

  • 40:1 reduction in
    material transport
  • 100% of onsite
    materials used
  • same day return to light traffic
  • up to 25 years of added
    pavement life

Hybrid vs. Reconstruction


Existing Road
Condition

Existing Layer Type Depth (in) Co-Eff SN
HMA 4 0.20 0.80
Granular Base (Existing) 8 0.10 0.80

Approximate SN

(Structural Number) 1.6
vs.

Conventional: Reconstruction

Many agencies are learning that the use of limited funds toward a “worst first” approach accelerates the decline of their overall network, as miles of good roads go untreated each year.

Scroll horizontally to view table

Layer Type Depth (in) Co-Eff $/SY SN
HMA 4 0.44 $21.26 1.76
Granular Base 10 0.14 $17.75 1.12

Optimized: Hybrid Cross Section

Consider an Optimized approach, which reallocates funds across more efficient strategies to keep good roads good and help you get ahead of the curve.

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Layer Type Depth (in) Co-Eff $/SY SN
Chip Seal - 0 $2.06 0
Cold Central Plant Recycle 4 0.35 $7.50 1.4
Base Stabilization w/ Emulsion 8 0.25 $10.20 2