The time it takes a pavement to return to the condition rating it had just prior to a treatment application. For example, before a treatment was applied, if a pavement was rated as a 60 PCI and it took 5 years to drop back to a 60 PCI, it can be said that the treatment provided 5 years of life extension.

The life extension of a given treatment varies greatly depending on roadway condition, quality of treatment, climate, and a number of other factors. Additionally, there are many best practices road owners can implement to achieve better than average life extension.

To provide conservative estimates, all calculator tools throughout the site use the median range of average performance. See the Expectations section of the Treatment Resource Center for detailed Life Extension information on each treatment, and visit the Best Practice section to learn how to maximize the life of each treatment.

Create a profile on RoadResource.org to enter and maintain information on cost, unit of measure, and life extension that is relevant to you. Once entered, this data will automatically populate the features of the site using your information.

Displayed costs are the result of a US and Canada cost survey conducted by an impartial third party. Localized costs vary greatly based on materials, labor, location and other factors. Replace pre-populated data with your local costs to make these tools more relevant or contact a contractor/supplier for a quote or for more locally relevant information.

Create a profile on RoadResource.org to enter and maintain information on cost, unit of measure, and life extension that is relevant to you. Once entered, this data will automatically populate the features of the site using your information. Note: Your data will not be reviewed or used by PPRA or any of its members and affiliates, nor will it be shared with external organizations.

Equivalent Annualized Cost is a simple method for comparing the cost of treatments, by dividing the cost of that treatment over the life extension or service life that treatment provides.

Many preservation and asphalt recycling treatments have a significantly reduced negative impact on the environment. We recognize that many factors influence the degrees of eco-advantage, such as hauling, availability of RAP, climate, application procedure, etc. We have made every effort to identify relevant sources which provide general, founded assumptions regarding the eco-advantage of these treatments.

Some sources we have referenced include: Microsurfacing Eco-Efficiency Analysis Final Report by BASF (July 2010), Energy Usage and Greenhouse Gas Emissions of Pavement Preservation Processes for Asphalt Concrete Pavements. National Center for Pavement Preservation, Okemos, Michigan, United States by Chehovits, J. & Galehouse, L. (2010), The Environmental Road of the Future: Life Cycle Analysis, Energy Consumption and Greenhouse Gas Emissions. Colas Group by Chappat, M. & Bilal, J (2003).

Where we have made conversions to suggest the equivalency of greenhouse gas reduction to passenger vehicles removed from the road from a year, we have pulled this information from conversion tools made available by the Environmental Protection Agency.

• Select a conventional treatment on the left calculator, and an optimized treatment on the right calculator.
• Use auto-populated average cost and life extension data, or enter your own data in place. Create a user profile to auto-fill your data throughout the site.
• Enter the total section to be treated.
• Your equivalent annualized cost, total cost, and environmental comparison will populate below.
• Click the question mark icons to learn more about each input.