City of Prairie Village
Preliminary Infrastructure Inventory Summary Report
The City Council requested a report on the condition and needs of the City’s infrastructure for a work session on February 5, 2011. The Public Works Department prepared a preliminary report which totals approximately 40 pages. This summary covers the major points in the complete report which is available on the City’s website.
The report reviews the City’s current goals and policies relating to infrastructure (City streets, drainage systems, buildings and parks). Current City policy is that infrastructure will be maintained in good condition. The report estimates the total value of City infrastructure at approximately $121 million (M). However, this estimate is based on historic construction costs, so it is definitely a low figure, perhaps by as much as 50% or more. The values are categorized by the four major areas mentioned above.
The report reviews a standard “infrastructure deterioration curve”. This graph, developed by the Federal Highway Administration, shows how almost all types of infrastructure deteriorate over time. The key conclusion is that it takes 4-5 times more resources to repair an asset if it deteriorates to a poor condition instead of repairing it when it was still in good condition.
The report identifies, describes and evaluates approximately 30 types of City infrastructure including drainage pipes, major and residential streets, sidewalks and various City buildings and parks. The information about the condition of City buildings and parks is limited.
The infrastructure condition data and estimates of necessary project needs are summarized at the end of the report in two tables. The total estimated project needs for the next 10 years are approximately $49.6M based on currently available information.
Public Works staff also presented a more detailed analysis of street funding needs. This included a projection of future street maintenance costs, which now total approximately $2.25M per year. These costs are projected to increase by approximately $1M per year by the year 2020. This analysis also estimated future capital needs for streets and reviewed recent and short term funding in this area.
The key findings of the detailed analysis for streets are that street pavement funding needs will average over $4M per year for the next 10 years. Meanwhile, currently programmed funding for the next three years is just over $1M per year, creating a projected funding shortfall of approximately $3M per year during this period.
Finally, the staff extrapolated the need for funding in the streets area to the City’s overall capital funding needs based on the proportion of current infrastructure values. These capital needs include streets, storm drainage, parks, tennis courts and buildings. Total future capital needs are estimated to be approximately $7M per year while currently programmed funding is approximately $2.5M per year. Therefore, the current projected funding shortfall for all City infrastructure is approximately $4.5M per year.