Infrastructure Condition Rating System

The Village prioritizes its annual road maintenance projects based on a variety of criteria that include overall road condition, funding, and the opportunity for concurrent utility work.

The following factors are analyzed on annual basis by the Department of Public Works for each road.

Condition

• Level of surface deterioration.
• Level of pavement cracking.
• Level of road base failure.
• Condition of the roadway edge.
• Drainage as if affects the life of the roadway.

Scale

• Worst = 1
• Average = 5
• Best = 10

Volume

• Estimated average daily traffic (measured or estimated).

Scale

• Lowest = 5
• Average = 3
• Highest = 1

Rating
This is the total of condition and volume ratings. Although the condition of the pavement is the first category and is weighted higher than volume, both are evaluated when developing the annual programs. Although an average rating for a street is shown as 8, the typical rating for our entire network is between 10 and 11 currently.

Scale

• Lowest = 2
• Average = 8
• Highest = 15

Road Program Developed
Once these ratings are updated, the road program is developed by grouping roads together that have the lowest road condition ratings so that contiguous Special Service Areas (SSAs) can be formed for funding purposes. An attempt is also made to choose streets that would allow us to coordinate any road construction with planned underground utility work that will require the opening of a road. Based on these criteria, the streets for a given year's road program are chosen. The number of roads chosen for work in a given year is limited by estimates of the cost of construction and the amount budgeted for the road program annually.

Water Main Condition Rating System
The Village prioritizes its annual water main replacements based on a variety of criteria that include overall condition, adequate supply, funding, and the opportunity for concurrent road work.

The following factors are analyzed on annual basis by the Department of Public Works for each section of water main.

Condition of Pipe

• Break history.
• Condition of pipe during inspections.
  Worst = 1
  Best = 5

• Capacity of Pipe vs. Demand: Current diameter as it relates to demand for section of main.
  Low = 1
  High = 5

• Critical Areas: Section of main associated with schools, business or other critical areas.
  High = 1
  Low = 5

• Special Projects:
  
  • Planned projects.
  • Scheduled road improvements.
  Special Project = 1
  No Project = 5
• Total Rating: Total rating for previous items.
  Lowest = 4
  Highest = 20

Additional Rating Items

• Diameter Based: Diameter of existing main.
  Smallest = 1
  Largest = 5
• Length Based: Length of main between loops.
  Longest = 1
  Shortest = 5

Total Replacement Score

• Worst = 6
• Best = 30

Total replacement scores are used to develop the annual water main replacement projects. An attempt is also made to choose segments of water main that would allow us to coordinate any future road construction. The number of water main sections chosen for work in a given year is limited by estimates of the cost of construction and the amount budgeted for the water main program annually.