715 			MarkTileDirtyByTile(tile);

   715 			MarkTileDirtyByTile(tile);

   716 		}

   716 		}

   717 		return cost;

   717 		return cost;

   718 

   718 

   719 	/* delete canal under bridge */

   719 	/* delete canal under bridge */

   721 		int32 cost;

   721 		int32 cost;

   722 

   722 

   723 		// check for vehicles under bridge

   723 		// check for vehicles under bridge

   724 		if (!EnsureNoVehicleZ(tile, TilePixelHeight(tile)))

   724 		if (!EnsureNoVehicleZ(tile, TilePixelHeight(tile)))

   725 			return CMD_ERROR;

   725 			return CMD_ERROR;