It shall be lawful for a highway authority to provide, erect, maintain and operate, or to join with another highway authority in providing, erecting, maintaining and operating, weighbridges or other machines for weighing vehicles or to contribute towards the cost of the provision, erection, maintenance and operation of any such weighbridge or other machine by any other authority or person.

The provision or erection, or the making of a contribution towards the provision or erection, of any such weighbridge or other machine shall be a purpose for which the highway authority may borrow.