Pavement Replacement Priority in Seattle

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Pavement Replacement Priority in Seattle

• Ali Boyum, Kayla Dantzler, John Mayfield, Derek
  Van De Wege

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Overview

• Project Scope
• Area of Interest
• Data Collection
• Data Analysis
• Results

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Project Scope

• Pavement near bus stops experience high stresses
• Metro is interested in replacing asphalt pavement
  with Portland Cement Concrete

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Area of Interest
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Data Collection

1. Pavement Near Bus Stops
2. Number of buses at each stop per day
3. Pavement Conditions
4. Pavement Types

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Pavement Near Bus stops

• Buffer 50 feet along street

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Bus Traffic Volumes At Stops

• Tabulated Bus volumes along each route from King
  County Metro
• Summed buses from each route for each stop

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Pavement Conditions

• Using the PMPCI rating index (from 0-100)

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Pavement Types

• Red- asphalt
• Blue- concrete

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High Risk Areas

• Bus Stops

• Pavement Types

• Pavement Condition

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Analysis of Traffic Volumes With Pavement
Conditions

• High priority areas are sections of road where
  all three high risk conditions overlap
• More than the mean bus volumes at stops
• Pavement condition rating below 50
• Sections of asphalt pavement
• Medium priority areas are sections of road where
  two of the conditions overlap
• Low priority areas are sections of road where
  there is only one of the conditions

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Results

• Red High Priority
• Blue Medium Priority
• Green Low Priority

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Questions?