61. (1) When any work referred to in section 60 is being executed by the Kartripakkha in any public street vested in them, or when any other work which may lawfully be done is being executed by the Kartripakkha in any street vested in them, the Kartripakkha may direct that such street shall, during the progress of such work, be either wholly or partially closed to traffic generally or to traffic of any specified description. (2) When any such direction has been given, the Kartripakkha shall set up in a conspicuous position in or near the street an order prohibiting traffic to the extent so directed, and shall fix such bars, chains or posts across or in the street as they may think proper for preventing or restricting traffic therein, after notifying in local newspapers their intention to do so.