How to Evaluate Whether or Not to Pave a Gravel Road (When to Pave a Gravel Road)

1
How to EvaluateWhether or Notto Pave a Gravel
Road(When to Pave a Gravel Road)
Rodger Young, P.E. Director of Technical Services
Presented at 30th Annual Asphalt Conference And
Equipment Show
2

• What is meant by a paved road
• Light chip seal ?
• Double chip seal ?
• 2-in. HMA mat ?
• 4-in. HMA mat ?
• Generally HMA mats lt 2-in. have little real
  load-bearing capacity of their own.

3

• What is meant by a paved road ?
• Asphalt Institute refers to a paved road as one
  that has a HMA mat of 4-in. of full depth
  asphalt or 3-in. suitable granular base.
• System that has load bearing capacity.
• Surface-treated road
• A roadway with lt 2-in. HMA mat.
• Protects the base material by shedding water and
  providing a smooth riding surface.

4

• Decision to paved
• Paving helps to seal the surface from moisture
  and protects the base and subgrade material,
• Eliminates dust problems
• Smoothness - Has higher user acceptance
• Accommodate many types of vehicles that do not
  operate as effectively on unsurfaced roads.
• Matter of trade-offs
• Maintenance - Properly maintained, a gravel road
  can serve general traffic adequately for many
  years

5

• Considerations for paving gravel roads
• Local agencies considering paving roadways
• reducing roadway maintenance cost,
• providing a smooth riding surface
• eliminating environmental (dust) problems.
• Local agencies should have a policy and criteria
  for paving gravel roads.

6

• An approach for determining whether or not a
  roadway should be paved.
• Roadway management program.
• Goal of the management program is to improve all
  roads by using good management practices
• Common sense system, step-by-step approach to
  scheduling and budgeting for maintenance work
• Establishes short-term and long-term maintenance
  goals, prioritizes projects within budget
  constraints

7

• An approach for determining whether or not a
  roadway should be paved.
• Roadway management program.
• Roadway inventory
• Roadway condition survey
• Determine appropriate treatments
• Establishes costs
• Sets priorities

8

• An approach for determining whether or not a
  roadway should be paved.
• Commitment to effective management
• Matter of making sure taxpayers money is well
  spent
• Planning for 5 or even 10 years instead of
  putting a band-aid on todays problem
• Using good management techniques instead of seat
  of the pants methods
• Taking time to do things right the first time and
  constructing projects to last

9

• An approach for determining whether or not a
  roadway should be paved.
• Traffic conditions and usage life and
  maintenance requirements of a roadway is affected
  by the number of vehicles and their weight
• Establishing traffic volumes and type of traffic
  for when to pave
• Establishing functional importance of the roadway
• Establishing design and construction standards
• Establishing maintenance standards
• Roadway safety

10

• An approach for determining if a roadway should
  be paved cont.
• Economic evaluation
• Determining when it is more economical to pave
  than leave the roadway a gravel surface
• Life cycle cost of the options

11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22

• An approach for determining if a roadway should
  be paved cont.
• Public opinion

23
Questions ??????