Significant sections of US 101 have been designated as part of the Purple Heart Trail:
http://www.edhat.com/site/tidbit.cfm?nid=143581
QuoteJust in time for Veterans Day, the California Department of Transportation (Caltrans), in partnership with Chapter 750 of the Military Order of the Purple Heart, State Senator Hannah-Beth Jackson, and Ventura County Supervisor Kathy Long, installed Purple Heart Trail signs along US Highway 101 in Ventura to mark the sacrifices and contributions of veterans to this country. This segment, which is part of a larger network across the nation, covers the entire length of Ventura County on US Highway 101. The 36-mile segment in Santa Barbara County just north of this segment was designated in 2010. ... Senate Concurrent Resolution No. 27 (Jackson, Resolution Chapter 88, Statutes of 2013) established specified portions of US Highway 101 in the counties of Santa Barbara and Ventura for inclusion in the National Purple Heart Trail. Private donations organized by Chapter 750 Military Order of the Purple Heart funded the cost for the signs.
The Purple Heart Trail was established in 1992 by the Congressionally-sanctioned Military Order of the Purple Heart to be a symbolic trail throughout all 50 states to commemorate and honor all men and women who have been wounded or given their lives in combat while serving in the U.S. armed forces. The Purple Heart Trail originates in Mount Vernon, Virginia, and traverses the United States to California.
Makes me wonder if the Purple Heart Trail is interconnected between states... A Wikipedia search on the term redirects to the article on I-80 in Nevada (indeed one of the official names for I-80 in Nevada, as recognized by NDOT, is The Purple Heart Trail).