Road Surface Management System

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Road Surface Management System Flexible
Pavement Condition Surveys August 2006
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Our Technique...
We completed an RSMS Flexible Pavement Condition
Survey for approximately every 1000ft on every
public road in Bolton. These completed sheets can
be found in the Bolton DPW Office. They rate the
section of road on seven conditions. This data
was compiled into Excel sheets and graphs that
can be found in the front of the 2006 Binder.
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The Survey...

• Alligator Cracking
• Longitudinal/Transverse Cracking
• Edge Cracking
• Patching/Potholes
• Drainage
• Roughness
• Rutting

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Alligator Cracking
Alligator cracks are interconnected cracks,
forming a series of small blocks resembling an
alligators skin. This occurs when the sub-base
gravel fails to provide adequate support for the
asphalt pavement. It is also known as fatigue
cracking, and repeated heavy loads and moisture
create excess flexing of the surface.
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Longitudinal/Transverse Cracking
Longitudinal cracks are individual and run
parallel to the centerline. Transverse cracks run
perpendicular to the centerline. They are caused
by inadequate bonding between paving lanes or
asphalt shrinkage from low temperatures.
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Edge Cracking
Edge cracks are approximately 1ft from the road
edge. Normally they are caused by lack of
shoulder support, or by the settlement of the
material under the edge. This can indicate poor
drainage, frost heaves, or shrinkage of the
surrounding earth.
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Patching/Potholes
Potholes arise when the wearing surface
disintegrates under traffic, due to inadequate
structural strength in one or more layers of the
pavement. They are bowl-shaped voids and are
often located in areas of poor drainage. Patches
are portions of pavement that have been removed
and replaced, usually to repair defects in the
pavement. Problems occur when the patches crack,
settle, or distort.
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Drainage
Inadequate drainage is important to document
because of the long-term affects of moisture on
pavement. Rain falling on pavement should be
efficiently directed to drains and catch basins.
Poor drainage can damage the concrete, weaken the
sub-grade, etc.
NO Defects
CONDITION
GOOD FAIR POOR
SEVERITY
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Roughness
The roughness of a road is determined by the
severity of uneven surfaces, corrugations, sags,
humps, frost heaves and the previous survey
conditions.
CONDITION
GOOD FAIR POOR
SEVERITY
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Rutting
Rutting is the displacement of pavement material
that creates channels in the wheel path and is
sometimes referred to as channeling.
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The Data
We compiled all of this information into
spreadsheets, and we devised and grading system
for each condition so all the roads can be
compared. All this data is subjective, and you
may not agree with every score, but this is a
sufficient way of determining which roads need
the most attention. There are many ways of
organizing this data, and a few of these ways
will be presented here, so as to create a good
picture of the road conditions. The following
graphs are using average numbers. The full sheets
divided by each section are the best indication
of which portion of a road needs the most
attention, but for general road conditions,
averages are useful to tell the best from the
worst.
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Road Cracks by Type
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The Plan

• In an ideal scenario have enough money to redo
  each road with just the occasional maintenance
• Plan to separate the roads into deciles and
  bring all the roads into that top 10 score (0-3)
• Achieved by paving or reconstructing the worst
  roads, or the sections of a road that are
  bringing the averages up, and then crack sealing
  and patching the roads in the middle range
• If all the roads have this low score then repave
  appropriately
• Repairing drainage issues and cracks will prolong
  the life of a road at least 4-5 years, by
  preventing damaging moisture from harming the
  sub-bases, which in turn adds more issues to the
  top layer of pavement
• Ultimate goal have all the roads in this 10
  range, avoiding disasters like Spectacle Hill in
  the future

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The Plan
10-20 Overall Condition 10-20 Overall Condition 10-20 Overall Condition
Road Name Types of Cracks Severity
Frye Road Long, Edge lt1
Hudson Road Long, Edge 1
Old Sugar Road Long, Edge 1
Pinewood Drive Long, Edge 1
Quail Run Road Long, Edge 1
Randall Road Long, Edge 1
Still River Road ALL lt1
Twin Maple Road Long, Edge 1
Vaughn Hill Road ALL lt1
West Berlin Road Long, Edge lt1
Wilder Road Long, Edge 1
Numbers shown under severity are averages of all
the cracks found. These data tables present the
roads that their overall condition is good, yet
could use some attention to keep them in a good
condition. As stated before, this can be achieved
by patching and repairing the deformities.
0-10 Overall Condition 0-10 Overall Condition 0-10 Overall Condition
Road Name Types of Cracks Severity
Berlin Road Long, Edge lt1
Coventry Wood Road Long, Edge lt1
Danforth Lane Long 1
Deer Path Long 1
Fox Run Road Long 1
Harris Farm Road Long 1
Harvard Road ALL lt1
Lively Road Long 1
Mt. Wachusett Edge 1
Nashaway Road Edge lt1
Nourse Road - 0
Old Bay Road Long, Edge lt1
Quaker Road - 0
Rocky Dundee Road Long lt1
Sawyer Road Long, Edge lt1
Sugar Road Long, Edge lt1
20-30 Overall Condition 20-30 Overall Condition 20-30 Overall Condition
Road Name Types of Cracks Severity
Annie Moore Road ALL 1
Autumn Lane Long, Edge 1
Kettle Hole Road Long, Edge 1
Main Street Long, Edge lt1
Sargent Road Long, Edge 2
South Bolton Road ALL 1
Whitcomb Road ALL 1
Woodside Drive Long, Edge 2
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The Plan
These data tables present the roads in fair/good
condition. As shown, most of the roads have all
the different types of cracks and many of them
have a higher severity average. These are the
roads that need to be attended to soon or they
have or may be past the patching stage.
30-40 Overall Condition 30-40 Overall Condition 30-40 Overall Condition
Road Name Types of Cracks Severity
Ballville Road ALL 1
Chase Road ALL 1
East End Road ALL 1
Farm Road ALL 1
Flanigan Road ALL 1
Golden Run Road ALL 1.5
Laurel Road ALL 1
Liberty Circle Edge 4
Wataquadoc Hill Road ALL 1
Weathers Lane Alligator, Long 2
Wheeler ALL 1.5
40-50 Overall Condition 40-50 Overall Condition 40-50 Overall Condition
Road Name Types of Cracks Severity
Bolton Woods Way ALL 1.5
Lancaster Road ALL 1
Long Hill Road ALL 1.5
Marrinott Road Long, Edge 1
Warner Road ALL 3
Woobly Road ALL 2
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The Plan

• Roads in Order (worst to better)
• Spectacle Hill Road
• Burnham Road
• Old Harvard Road
• Powder Hill Road
• Meadow Road
• Forbush Mill Road
• Teele Road
• McNulty Road

This data table presents the roads that are in
the 50 or more percentile in overall condition.
These are the worst roads in town according to
our findings.
50- more Overall Condition 50- more Overall Condition 50- more Overall Condition
Road Names Types of Cracks Severity
Burnham Road ALL 2
Forbush Mill Road ALL 1
McNulty Road ALL 2
Meadow Road ALL 1
Old Harvard ALL 2
Powder Hill Road ALL 3
Spectacle Hill Road ALL 2
Teele Road ALL 2
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Normal Pavement Deterioration