Existing law provides that the Department of Transportation has full possession and control of all state highways. Existing law describes the authorized routes in the state highway system. Existing law authorizes the California Transportation Commission to select, adopt, and determine the location for state highways on routes authorized by law, as specified. Existing law authorizes the commission to adopt an existing road as a state highway on an authorized route if the road is constructed to adequate standards. Existing law provides that State Highway Route 59 is from Route 152 northerly to Route 99 near the City of Merced and from Route 99 near the City of Merced to Snelling.

This bill would, on or before December 31, 2030, require the commission to reach an agreement with the Counties of Merced, Stanislaus, and Tuolumne for the acquisition and adoption of county road J59 as a state highway, as specified. The bill would, on and after January 1, 2031, instead provide that State Highway Route 59 is from Route 152 northerly to Route 99 near the City of Merced and from Route 99 near the City of Merced to the junction of Routes 108 and 120.