Practical Design (PD) is a flexible approach to engineering where projects are evaluated throughout the development lifecycle to look for opportunities to lower project costs. PD looks to address the problem of “how do we do more with less” to maximize system-wide improvements. The approach focuses on maximizing improvements to the roadway system as a whole rather than maximizing improvements to a few locations. PD solutions aren’t just limited to reducing construction costs, they also can reduce operating and maintenance costs that are sometimes significantly higher than the original construction cost. PD encourages innovation and flexibility and requires more information and a higher level of analysis when defining and deciding on the most appropriate solution to a particular problem.

PD places emphasis upon solutions that contribute to the overall condition and function of the entire corridor instead of attempting to achieve the most desirable condition for a single project. PD has increased the ability of many states to deliver more cost-effective design solutions, without compromising safety or quality while enhancing the overall transportation system.