By the Federal-Aid Highway Amendments of 1974, and the Federal-Aid Highway Act of 1976, Congress has enacted Section 219 of Title 23 of the United States Code establishing a Safer Off-System Roads Program for the construction, reconstruction, and improvement (including, but not limited to, the correction of safety hazards, the replacement of bridges and the elimination of high-hazard locations and roadside obstacles) of any toll-free road, which is not on any federal-aid system and which is under the jurisdiction of and maintained by a public authority and open to public travel. Boards of supervisors, city councils, the department, and the commission may do all things necessary and proper in their respective jurisdictions to secure the federal funds available under this program for local roads and state highways in accordance with the intent of the federal act and this chapter.