Remaining Service Life


Is your network gaining or losing life each year?

Understanding Remaining Service Life (RSL) is critical to designing a treatment plan that stretches your budget further and reverses the trend of a deteriorating network.

CRITICAL CONCEPT

A 500-mile network loses 500 mile-years of life annually.

Every year, every mile of your network loses 1 mile-year of life. To avoid losing ground, the roadway owner must design a treatment plan that adds 500 mile-years of life or more!

See how this agency reallocated funds to inject more life
into their network, using the same budget

"Worst First" Approach

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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Treatment Type Lane-Miles Lane-Mile-Years Total Cost
Reconstruction 12 300 $3,260,928
Full Depth Remove & Replace 4 100 $1,373,152
Full Depth Reclaim + 4" HMA 4 100 $1,004,608
Base Stabilization + 4" HMA 4 100 $883,168
Rehabilitation 16 208 $1,842,016
3" Mill-and-Fill with HMA 4 60 $585,728
Cold Recycling + 1.5" HMA 4 60 $492,096
Hot Recycling + 1.5" HMA 4 44 $419,232
1.5" Mill-and-Fill with HMA 4 44 $344,960
Preservation 0 0 $0
Bonded Wearing Cours 0 0 $0
Cape Seal 0 0 $0
Micro Surfacing (double lift) 0 0 $0
Chip Seal 0 0 $0
Slurry Seal 0 0 $0
Rejuvenating Fog Seal 0 0 $0
Crack Seal 0 0 $0
Totals: 28 508 $5,102,944
  • Total Network Lane-Miles
    1000
  • Total Lane-Mile-Years Lost Annually
    1000
  • Lane-Mile-Years Added
    508
  • Annual Network Deficit (-492)

Optimized Approach

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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Treatment Type Lane-Miles Lane-Mile-Years Total Cost
Reconstruction 4 100 $943,888
Full Depth Remove & Replace 0 0 $0
Full Depth Reclaim + 4" HMA 2 50 $441,584
Base Stabilization + 4" HMA 2 50 $441,584
Rehabilitation 8 104 $921,008
3" Mill-and-Fill with HMA 2 30 $292,864
Cold Recycling + 1.5" HMA 2 30 $246,048
Hot Recycling + 1.5" HMA 2 22 $209,616
1.5" Mill-and-Fill with HMA 2 22 $172,480
Preservation 196 908 $3,129,984
Bonded Wearing Course 2 20 $122,848
Cape Seal 10 100 $457,600
Micro Surfacing (double lift) 20 160 $689,920
Chip Seal 40 240 $725,120
Slurry Seal 40 200 $746,240
Rejuvenating Fog Seal 20 60 $117,920
Crack Seal 64 128 $270,336
Totals: 208 1,112 $4,994,880
  • Total Network Lane-Miles
    1000
  • Total Lane-Mile-Years Lost Annually
    1000
  • Lane-Mile-Years Added
    1112
  • Annual Network Gain 112

Ready To Optimize Your Network?

Are you injecting the most life into your network or are
you fighting a losing battle with a worst-first approach?