SR 125 is part of the California Freeway and Expressway System, and south of I-8 is part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration. The route is eligible to be included in the State Scenic Highway System, but it is only a scenic highway from SR 94 to I-8 as designated by the California Department of Transportation (Caltrans), meaning that it is a substantial section of highway passing through a "memorable landscape" with no "visual intrusions", where the potential designation has gained popular favor with the community. In 2018, SR 125 had an annual average daily traffic (AADT) of 10,200 vehicles between the Otay River Bridge and Olympic Parkway, and 183,000 vehicles between SR 94 and Lemon Avenue, the latter of which was the highest AADT for the highway.