As of 2021, the Straightline Charts are no longer being updated. Instead we direct you to the State Highway Inventory Reports which are updated on a monthly basis and provide a more accurate illustration of the highway data. These tabular reports will give you access to more current information than the Straightline Charts were able to provide. Links to the State Highway Inventory Reports and instructions for their use are provided below.
We will keep the current charts posted online until June 30, 2023 at which time they will be removed from the web page.
A Straightline Chart is a lineal representation of the features along a state highway. Intersecting roadways, as well as culverts, rivers, bridges, city limits, state parks, viewpoints and many other features are shown by milepoint along the Straightline Chart ribbon. There are also interchange diagrams for each connection and frontage road along the highway with their features noted by milepoint. These charts can be used as a quick reference to locate an attribute along a state highway, connection or frontage road.