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
Existing HMA 6 0.20 1.20
Existing 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/in Cost SN
Cold Planing 3 0.00 $1.00 $3.00 0.00
HMA 3 0.44 $4.65 $13.95 1.32
Existing HMA 3 0.20 - - 0.60
Existing Granular Base 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/in Cost SN
HMA 1 0.44 $4.65 $4.65 0.44
Cold-In-Place Recycling 3 0.36 $1.90 $5.70 1.08
Existing HMA 3 0.20 - - 0.60
Existing Granular Base 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
Existing HMA 2 0.20 0.40
Existing HMA 5 0.30 1.50
Existing Granular Base 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/in Cost SN
Cold Planing 2 0.00 $1.00 $2.00 0.00
HMA 2 0.44 $4.65 $9.30 0.88
Existing HMA 5 0.30 - - 1.50
Existing Granular Base 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/in Cost SN
HMA 1 0.44 $4.65 $4.65 0.44
1" Hot In-place Recycling 1 0.43 $4.00 $4.00 0.43
Existing HMA 6 0.30 - - 1.80
Existing Granular Base 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
Existing HMA 4 0.20 0.80
Existing Granular Base 8 0.10 0.80

Approximate SN

(Structural Number) 1.60
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/in Cost SN
Cold Planing 4 0.00 $1.00 $4.00 0.00
Remove Granular Base 8 0.00 $0.33 $2.64 0.00
HMA 4 0.44 $4.65 $18.60 1.76
Granular Base 8 0.14 $1.88 $15.04 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/in Cost SN
HMA 2 0.44 $4.65 $9.30 0.88
Cementitious FDR 8 0.23 $1.23 $9.84 1.84
Existing Granular Base 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
Existing HMA 4 0.20 0.80
Existing Granular Base 8 0.10 0.80

Approximate SN

(Structural Number) 1.60
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/in Cost SN
Cold Planing 4 0.00 $1.00 $4.00 0.00
Remove Granular Base 8 0.00 $0.33 $2.64 0.00
HMA 4 0.44 $4.65 $18.60 1.76
Granular Base 8 0.14 $1.88 $15.04 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/in Cost SN
Chip Seal N/A 0.44 - $2.06 0.00
Cold Central Plant Recycle 4 0.36 $2.25 $9.00 1.44
Base Stabilization 8 0.25 $1.23 $9.84 2.00