The Multi-Year Publication is a proposed program of road and structure projects that are planned for the listed timeframe. The last several MYP publications have been for a six year program. There are three layer files that make up the program. They are roadway, spot, and structure layer files. There are many projects that are not mapped, including those with only Engineering and Utility Improvement Types. The Roadway Layer File is populated by selecting project records containing a Roadway Improvement Type. Those selected are considered “high level construction”, (Resurfacing, Additional Lanes, etc.), as opposed to “low level construction”, (Patching, Skidproofing, etc.).