5) is a toll-free part of the federal highways corridors (Spanish: los corredores carreteros federales), and follows the northeast length of the state of Baja California from the US-Mexico border in Mexicali to the junction with Fed.

From San Felipe to the south, the road follows the seacoast of the Gulf of California until Chapala and the Jct.

The new highway improvement segments being constructed from San Felipe to the north and Mexicali to the south are on a raised base so that roadway dips caused by the natural undulation of the landscape, a form of drainage, are replaced by drainage culverts covered by the highway.

The hurricanes in Sept & October 2018 have caused significant damage to the bridges south of San Felipe.

Some of these detours are short & easy, while others wind down canyons & cross the wash a hundred or more feet below the bridge.

The state route that starts in San Felipe and continues to Chapala is a natural extension of Fed. 5.