Preservation projects account for approximately 28% of the annual road program. These projects keep highway pavements, bridges, bike paths and other assets in a good condition. Preservation projects are normally given first priority preference. Many of these projects are developed from road inventories and inspections. Others are derived using Argus, a computer-based pavement management program which analyzes pavement testing results and generates a set of recommended projects for the next five years, given budget availability.
Lake County has made a significant investment in its pavements. the estimated cost to build the existing county roadway network today exceeds $1.6 billion. Preservation projects help to protect this investment, and provide smooth pavements and bridges to highway users.