9. Public works and undertakings within the province including buildings, roads, bridges, ferries, tunnels, ropeways, causeways, tramways, light and feeder railways, inland waterways and other means of communications except:
(a) such railways, roads and inland waterways as are central subjects.
(b) all such works as extend beyond the borders of the province.
(c) such works (although wholly situate within the province) as may be declared by Parliament to be of all India importance.