To expedite a stimulus project, WSDOT used a Pavia web app to select an optimal rapid renewal option for pavement rehabilitation.
Challenge – Getting Underway Quickly
For a 12-mile rehabilitation project on I-5 in Washington state, WSDOT had to make swift design decisions that would provide a long pavement life while keeping the project within budget. To secure federal funding under the American Recovery and Reinvestment Act, the project needed to qualify as “shovel-ready.” In spending the stimulus funds, the goal was to have the project out to bid within four months. WSDOT was looking for a way to quickly select the appropriate pavement renewal strategy and needed to feel comfortable about the different options, some of which were relatively new to the agency.
Impact of Pavia Solution
- Identified renewal strategy that saved $4 million over existing practices
- Recommended strategy that reduced number of traffic closures by 43%
- Results provided confidence in implementing new renewal approach
The R-23 Web App from Pavia
To solve this problem, WSDOT decided to turn to the SHRP 2 R-23 research project, which involved developing guidelines for long-life pavement renewal. As part of this project, Pavia Systems created a web-based scoping tool to help engineers identify renewal options and apply the guidelines in a rapid renewal environment. The user-friendly web app works by taking basic information about the existing and proposed sections and applying detailed project criteria to make its recommendation. The recommendation identifies specific renewal strategies, proposes an appropriate section design, and provides accompanying best practices and guide specifications to help users navigate the decision-making process.
For this rehabilitation project, the app identified three renewal strategies, one of which was a crack, seat, and overlay—an approach WSDOT did not have a lot of experience with. Further analysis identified this approach as the best option, saving over $4 million in construction costs compared to the next-best alternative while maintaining a 50-year life cycle. Starting over again or pursuing other options would have created additional expenses and unnecessarily shortened the pavement life. Fortunately, the app also included guide specifications and best practices that helped the agency get up to speed on this technique. Since the tool provided reasonable design sequences and engineers got similar results from checking with experts in the field, WSDOT was able to move ahead with confidence in its renewal strategy.
State Pavement Engineer
Successful Renewal and a Look Ahead
By using the Pavia web app, WSDOT was able to identify a long-lasting renewal option, save costs by using the existing pavement in place, and complete the project on time and on budget. The project schedule was simplified by the fact that the crack, seat, and overlay option required significantly fewer traffic closures than the alternative strategies. For future projects, the agency anticipates being able to use the Pavia app on any sizable rehabilitation job, so it can run the project through the R-23 guidelines. If used as a standard practice, this tool will help verify which options the agency should be investigating before it proceeds with engineering and life cycle cost analysis.
To expedite a stimulus project, WSDOT uses a Pavia web app to select an optimal rapid renewal option for pavement rehabilitation.
Pavia Services Utilized
- Web Development
- Application Development
- Interface Design
- Marketing & Outreach
- Hosting Services