This data set depicts Oregon state highways that have been identified as tier 1, 2, or 3 seismic lifelines and identifies seismic lifelines for implementation of Policy 1E, Lifeline Routes, in the 1999 Oregon Highway Plan. This is the final work product for the Oregon Seismic Lifelines Identification project, completed by ODOT Transportation Development Division in May 2012. This shapefile was initially derived from the ODOT shapefiles "high_routes.shp."